Difference between revisions of "Timeline of Slack"

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| 2016 and 2017 || {{w|Facebook}} and {{w|Microsoft}} launch their own products to compete with Slack. By 2017, Slack gains more than 150 Enterprise Grid customers from renowned businesses, including {{w|21st Century Fox}}, {{w|IBM}}, {{w|Capital One}}, and {{w|Liberty Mutual}}, etc.<ref>{{cite web |title=Thinking big: Slack surpasses milestone of 150 Enterprise Grid customers |url=https://www.siliconrepublic.com/enterprise/enterprise-grid-slack |website=siliconrepublic.com |accessdate=5 October 2019}}</ref>
 
| 2016 and 2017 || {{w|Facebook}} and {{w|Microsoft}} launch their own products to compete with Slack. By 2017, Slack gains more than 150 Enterprise Grid customers from renowned businesses, including {{w|21st Century Fox}}, {{w|IBM}}, {{w|Capital One}}, and {{w|Liberty Mutual}}, etc.<ref>{{cite web |title=Thinking big: Slack surpasses milestone of 150 Enterprise Grid customers |url=https://www.siliconrepublic.com/enterprise/enterprise-grid-slack |website=siliconrepublic.com |accessdate=5 October 2019}}</ref>
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| 2018 || Slack surpasses 8 million users, and over 600 different software are estimated to be integrated with it.<ref name="History, Funding, Integrations">{{cite web |title=What Is Slack? History, Funding, Integrations and Direct Listing |url=https://www.getkisi.com/unlocked/what-is-slack-history-funding-integrations-and-direct-listing |website=getkisi.com |accessdate=20 October 2019}}</ref>
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| 2019 || Slack [[w:IPO|goes public]]. Daily active users exceed 10 million.<ref name="History, Funding, Integrations"/>
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| 2020 || Slack is acquired by {{w|Salesforce}}.
 
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== Visual data ==
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[[File:Evolution of Slack’s daily active users (DAU) and paid seats.png|thumb|center|600px|Evolution of Slack’s daily active users (DAU) and paid seats.]]
 
  
 
==Full timeline==
 
==Full timeline==
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| 2013 || August 15 || Userbase || Slack signs up 8,000 companies in 24 hours.<ref>{{cite web|last1=Koetsier|first1=John|title=Flickr founder Stewart Butterfield's new Slack signed up 8,000 companies in 24 hours|url=https://venturebeat.com/2013/08/15/flickr-founder-stewart-butterfields-new-slack-signed-up-8000-companies-in-24-hours/|website=venturebeat.com|accessdate=2 October 2017}}</ref>  
 
| 2013 || August 15 || Userbase || Slack signs up 8,000 companies in 24 hours.<ref>{{cite web|last1=Koetsier|first1=John|title=Flickr founder Stewart Butterfield's new Slack signed up 8,000 companies in 24 hours|url=https://venturebeat.com/2013/08/15/flickr-founder-stewart-butterfields-new-slack-signed-up-8000-companies-in-24-hours/|website=venturebeat.com|accessdate=2 October 2017}}</ref>  
 
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| 2014 || February || || The data for Slack's first six-month usage period since the preview release is published, showing that nearly 16,000 users were registered without the use of any form of advertising —growth was based solely upon word-of-mouth.<ref name="Mat">{{cite web|author1=Mat Honan|title=The Most Fascinating Profile You’ll Ever Read About a Guy and His Boring Startup|url=https://www.wired.com/2014/08/the-most-fascinating-profile-youll-ever-read-about-a-guy-and-his-boring-startup/|website=Wired|publisher=Condé Nast|accessdate=16 October 2017|date=7 July 2014}}</ref>
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| 2014 || February || Userbase || The data for Slack's first six-month usage period since the preview release is published, showing that nearly 16,000 users were registered without the use of any form of advertising —growth was based solely upon word-of-mouth.<ref name="Mat">{{cite web|author1=Mat Honan|title=The Most Fascinating Profile You’ll Ever Read About a Guy and His Boring Startup|url=https://www.wired.com/2014/08/the-most-fascinating-profile-youll-ever-read-about-a-guy-and-his-boring-startup/|website=Wired|publisher=Condé Nast|accessdate=16 October 2017|date=7 July 2014}}</ref>
 
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| 2014 || February 12 || Service || Slack exits [[w:Beta release|Beta]] and goes {{w|Freemium}}.<ref>{{cite web|title=Slack, Flickr Co-Founder Butterfield’s Business Collaboration App, Exits Beta & Goes Freemium|url=https://techcrunch.com/2014/02/12/slack-exits-beta/|website=techcrunch.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Steele|first1=Billy|title=Flickr co-founder's Slack collaboration tool leaves beta, goes freemium for all|url=https://www.engadget.com/2014/02/12/slack-collaboration-software/|website=engadget.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Gannes|first1=Liz|title=Workplace Communication Hub Slack Launches to the Public|url=https://www.recode.net/2014/2/12/11623392/workplace-communication-hub-slack-launches-to-the-public|website=recode.net|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Ingram|first1=Mathew|title=Flickr co-founder launches Slack, an all-in-one messaging tool designed to kill email forever|url=https://gigaom.com/2014/02/12/flickr-co-founder-launches-slack-an-all-in-one-messaging-tool-designed-to-kill-email-forever/|website=gigaom.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Grant|first1=Rebecca|title=Flickr cofounder launches ’email killer’ Slack to the world|url=https://venturebeat.com/2014/02/12/flickr-cofounder-launches-email-killer-slack-to-the-world/|website=venturebeat.com|accessdate=3 October 2017}}</ref><ref>{{cite web|title=Slack exits beta with its tool for information overload|url=https://www.techworld.com/news/apps-wearables/slack-exits-beta-with-its-tool-for-information-overload-3501826/|website=techworld.com|accessdate=3 October 2017}}</ref>
 
| 2014 || February 12 || Service || Slack exits [[w:Beta release|Beta]] and goes {{w|Freemium}}.<ref>{{cite web|title=Slack, Flickr Co-Founder Butterfield’s Business Collaboration App, Exits Beta & Goes Freemium|url=https://techcrunch.com/2014/02/12/slack-exits-beta/|website=techcrunch.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Steele|first1=Billy|title=Flickr co-founder's Slack collaboration tool leaves beta, goes freemium for all|url=https://www.engadget.com/2014/02/12/slack-collaboration-software/|website=engadget.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Gannes|first1=Liz|title=Workplace Communication Hub Slack Launches to the Public|url=https://www.recode.net/2014/2/12/11623392/workplace-communication-hub-slack-launches-to-the-public|website=recode.net|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Ingram|first1=Mathew|title=Flickr co-founder launches Slack, an all-in-one messaging tool designed to kill email forever|url=https://gigaom.com/2014/02/12/flickr-co-founder-launches-slack-an-all-in-one-messaging-tool-designed-to-kill-email-forever/|website=gigaom.com|accessdate=3 October 2017}}</ref><ref>{{cite web|last1=Grant|first1=Rebecca|title=Flickr cofounder launches ’email killer’ Slack to the world|url=https://venturebeat.com/2014/02/12/flickr-cofounder-launches-email-killer-slack-to-the-world/|website=venturebeat.com|accessdate=3 October 2017}}</ref><ref>{{cite web|title=Slack exits beta with its tool for information overload|url=https://www.techworld.com/news/apps-wearables/slack-exits-beta-with-its-tool-for-information-overload-3501826/|website=techworld.com|accessdate=3 October 2017}}</ref>
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| 2018 || February 28 || Competition || Google releases {{w|Google Hangouts}}, a service that allows users to message each other privately or in groups, and work collaboratively on projects. Similar to Slack, it also provides other Google products such as Docs, Sheets, Slides, Calendar and Cloud Search.<ref>{{cite web |last1=Slefo |first1=George P. |title=GOOGLE TAKES AIM AT SLACK WITH NEW HANGOUTS UPDATE |url=https://adage.com/article/digital/google-takes-aim-slack-hangouts-update/312558 |website=adage.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Google takes on Slack by adding Hangouts Chat productivity tool to G Suite |url=https://appleinsider.com/articles/18/02/28/google-takes-on-slack-by-adding-hangouts-chat-productivity-tool-to-g-suite |website=appleinsider.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Google’s Slack competitor Hangouts Chat is launching for businesses as part of G Suite |url=https://www.theverge.com/2018/2/28/17061336/googles-g-suite-introduces-chat |website=theverge.com |accessdate=5 October 2019}}</ref>  
 
| 2018 || February 28 || Competition || Google releases {{w|Google Hangouts}}, a service that allows users to message each other privately or in groups, and work collaboratively on projects. Similar to Slack, it also provides other Google products such as Docs, Sheets, Slides, Calendar and Cloud Search.<ref>{{cite web |last1=Slefo |first1=George P. |title=GOOGLE TAKES AIM AT SLACK WITH NEW HANGOUTS UPDATE |url=https://adage.com/article/digital/google-takes-aim-slack-hangouts-update/312558 |website=adage.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Google takes on Slack by adding Hangouts Chat productivity tool to G Suite |url=https://appleinsider.com/articles/18/02/28/google-takes-on-slack-by-adding-hangouts-chat-productivity-tool-to-g-suite |website=appleinsider.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Google’s Slack competitor Hangouts Chat is launching for businesses as part of G Suite |url=https://www.theverge.com/2018/2/28/17061336/googles-g-suite-introduces-chat |website=theverge.com |accessdate=5 October 2019}}</ref>  
 
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| 2018 || March 22 || || Slack partners with HCM platform Workday, with the purpose to merge their individual expertise to reach employees. The partnership ís expected "to allow employees to request time-off via Slack, allow real-time peer feedback, make looking up coworker info simpler and, eventually, offer customized notifications and simplified Slack channel assignments."<ref>{{cite web |title=Workday partners with Slack to provide workers real-time access to HR |url=https://www.hrdive.com/news/workday-partners-with-slack-to-provide-workers-real-time-access-to-hr/519752/ |website=hrdive.com |accessdate=5 October 2019}}</ref>
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| 2018 || March 22 || Partnership || Slack partners with HCM platform Workday, with the purpose to merge their individual expertise to reach employees. The partnership ís expected "to allow employees to request time-off via Slack, allow real-time peer feedback, make looking up coworker info simpler and, eventually, offer customized notifications and simplified Slack channel assignments."<ref>{{cite web |title=Workday partners with Slack to provide workers real-time access to HR |url=https://www.hrdive.com/news/workday-partners-with-slack-to-provide-workers-real-time-access-to-hr/519752/ |website=hrdive.com |accessdate=5 October 2019}}</ref>
 
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| 2018 || April 12 || Product || Slack Enterprise Grid adds security, compliance tools, enhancing its scalability and security. The upgrades  include tools for auditing and device management, in addition to onboarding features that makes it easier to add new employees to Slack channels.<ref>{{cite web |title=Slack Enterprise Grid adds security, compliance tools |url=https://searchunifiedcommunications.techtarget.com/news/252438924/Slack-Enterprise-Grid-adds-security-compliance-tools |website=searchunifiedcommunications.techtarget.com |accessdate=5 October 2019}}</ref>  
 
| 2018 || April 12 || Product || Slack Enterprise Grid adds security, compliance tools, enhancing its scalability and security. The upgrades  include tools for auditing and device management, in addition to onboarding features that makes it easier to add new employees to Slack channels.<ref>{{cite web |title=Slack Enterprise Grid adds security, compliance tools |url=https://searchunifiedcommunications.techtarget.com/news/252438924/Slack-Enterprise-Grid-adds-security-compliance-tools |website=searchunifiedcommunications.techtarget.com |accessdate=5 October 2019}}</ref>  
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| 2018 || April 20 || Policy || Slack updates privacy policy, allowing employers to download and read direct messages sent between co-workers without telling them.<ref>{{cite web |title=Slack updates privacy policy: Employers can read 'private' DMs without telling workers |url=https://www.nbcnews.com/better/business/slack-updates-privacy-policy-employers-can-read-private-dms-without-ncna862811 |website=nbcnews.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Slack competitor Spectrum released as open source group messaging platform |url=https://www.techrepublic.com/article/slack-competitor-spectrum-released-as-open-source-group-messaging-platform/ |website=techrepublic.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Update to Slack Privacy Policy Allows Employers to Read DM's |url=https://www.nbcphiladelphia.com/news/tech/Updates-to-Slack-Privacy-Policy--478860473.html |website=nbcphiladelphia.com |accessdate=5 October 2019}}</ref>
 
| 2018 || April 20 || Policy || Slack updates privacy policy, allowing employers to download and read direct messages sent between co-workers without telling them.<ref>{{cite web |title=Slack updates privacy policy: Employers can read 'private' DMs without telling workers |url=https://www.nbcnews.com/better/business/slack-updates-privacy-policy-employers-can-read-private-dms-without-ncna862811 |website=nbcnews.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Slack competitor Spectrum released as open source group messaging platform |url=https://www.techrepublic.com/article/slack-competitor-spectrum-released-as-open-source-group-messaging-platform/ |website=techrepublic.com |accessdate=5 October 2019}}</ref><ref>{{cite web |title=Update to Slack Privacy Policy Allows Employers to Read DM's |url=https://www.nbcphiladelphia.com/news/tech/Updates-to-Slack-Privacy-Policy--478860473.html |website=nbcphiladelphia.com |accessdate=5 October 2019}}</ref>
 
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| 2018 || May 8 || || Slack reports 8 million daily active users and 3 million paid users.<ref name="">{{cite web |title=Slack hits 8 million daily active users with 3 million paid users |url=https://techcrunch.com/2018/05/08/slack-hits-8-million-daily-active-users-with-3-million-paid-users/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=SLACK REPORTS 8 MILLION DAILY ACTIVE USERS, 3 MILLION PAID USERS |url=https://betakit.com/slack-reports-8-million-daily-active-users-3-million-paid-users/ |website=betakit.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack hits 8 million daily users, with 3 million paid subscribers |url=https://www.geekwire.com/2018/slack-hits-8-million-daily-users-3-million-paid-subscribers/ |website=geekwire.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack touts 8M users as team collaboration competition intensifies |url=https://www.computerworld.com/article/3271425/slack-touts-8m-users-as-team-collaboration-competition-intensifies.html |website=computerworld.com |accessdate=6 October 2019}}</ref>
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| 2018 || May 8 || Userbase || Slack reports 8 million daily active users and 3 million paid users.<ref name="">{{cite web |title=Slack hits 8 million daily active users with 3 million paid users |url=https://techcrunch.com/2018/05/08/slack-hits-8-million-daily-active-users-with-3-million-paid-users/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=SLACK REPORTS 8 MILLION DAILY ACTIVE USERS, 3 MILLION PAID USERS |url=https://betakit.com/slack-reports-8-million-daily-active-users-3-million-paid-users/ |website=betakit.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack hits 8 million daily users, with 3 million paid subscribers |url=https://www.geekwire.com/2018/slack-hits-8-million-daily-users-3-million-paid-subscribers/ |website=geekwire.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack touts 8M users as team collaboration competition intensifies |url=https://www.computerworld.com/article/3271425/slack-touts-8m-users-as-team-collaboration-competition-intensifies.html |website=computerworld.com |accessdate=6 October 2019}}</ref>
 
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| 2018 || May 22 || Product || Slack introduces Actions, a set of new developer tools, to make it easier to create and finish tasks without leaving. Developers including {{w|Asana}}, {{w|Jira}}, Pocket, and {{w|Zendesk}} have newly integrated “action buttons”  letting users perform actions on those services directly from Slack messages.<ref>{{cite web |title=Slack introduces Actions to make it easier to create and finish tasks without leaving |url=https://techcrunch.com/2018/05/22/slack-introduces-actions-to-make-it-easier-to-create-and-finish-tasks-without-leaving/ |website=techcrunch.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Gagliordi |first1=Natalie |title=Slack's new Actions tool turns messages into tasks |url=https://www.zdnet.com/article/slacks-new-actions-tool-turns-messages-into-tasks/ |website=zdnet.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Finnegan |first1=Matthew |title=Slack adds Actions feature, highlights dev community growth |url=https://www.computerworld.com/article/3273710/slack-adds-actions-feature-highlights-dev-community-growth.html |website=computerworld.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Newton |first1=Casey |title=Slack adds action buttons to become a true workplace communication hub |url=https://www.theverge.com/2018/5/22/17378228/slack-action-buttons-asana-jira-bitbucket-developer-conference |website=theverge.com |accessdate=5 October 2019}}</ref>
 
| 2018 || May 22 || Product || Slack introduces Actions, a set of new developer tools, to make it easier to create and finish tasks without leaving. Developers including {{w|Asana}}, {{w|Jira}}, Pocket, and {{w|Zendesk}} have newly integrated “action buttons”  letting users perform actions on those services directly from Slack messages.<ref>{{cite web |title=Slack introduces Actions to make it easier to create and finish tasks without leaving |url=https://techcrunch.com/2018/05/22/slack-introduces-actions-to-make-it-easier-to-create-and-finish-tasks-without-leaving/ |website=techcrunch.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Gagliordi |first1=Natalie |title=Slack's new Actions tool turns messages into tasks |url=https://www.zdnet.com/article/slacks-new-actions-tool-turns-messages-into-tasks/ |website=zdnet.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Finnegan |first1=Matthew |title=Slack adds Actions feature, highlights dev community growth |url=https://www.computerworld.com/article/3273710/slack-adds-actions-feature-highlights-dev-community-growth.html |website=computerworld.com |accessdate=5 October 2019}}</ref><ref>{{cite web |last1=Newton |first1=Casey |title=Slack adds action buttons to become a true workplace communication hub |url=https://www.theverge.com/2018/5/22/17378228/slack-action-buttons-asana-jira-bitbucket-developer-conference |website=theverge.com |accessdate=5 October 2019}}</ref>
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| 2018 || September 24 || Acquisition || Slack acquires {{w|San Francisco}}-based email management startup Astro Technology, with the purpose to unify chat and email features.<ref>{{cite web |last1=Heater |first1=Brian |title=Slack acquires Astro to conquer email |url=https://techcrunch.com/2018/09/24/slack-acquires-astro-to-conquer-email/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack acquires Astro to help email and channels work together |url=https://slackhq.com/slack-acquires-astro-to-help-email-and-channels-work-together |website=slackhq.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack Acquires Astro Technology to Streamline Chat and Email |url=http://www.kmworld.com/Articles/News/News/Slack-Acquires-Astro-Technology-to-Streamline-Chat-and-Email-127704.aspx |website=kmworld.com |accessdate=6 October 2019}}</ref>  
 
| 2018 || September 24 || Acquisition || Slack acquires {{w|San Francisco}}-based email management startup Astro Technology, with the purpose to unify chat and email features.<ref>{{cite web |last1=Heater |first1=Brian |title=Slack acquires Astro to conquer email |url=https://techcrunch.com/2018/09/24/slack-acquires-astro-to-conquer-email/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack acquires Astro to help email and channels work together |url=https://slackhq.com/slack-acquires-astro-to-help-email-and-channels-work-together |website=slackhq.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack Acquires Astro Technology to Streamline Chat and Email |url=http://www.kmworld.com/Articles/News/News/Slack-Acquires-Astro-Technology-to-Streamline-Chat-and-Email-127704.aspx |website=kmworld.com |accessdate=6 October 2019}}</ref>  
 
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| 2018 || December 20 || || A number of Slack users related to countries embargoed by the United States have their accounts deactivated and their free access revoked. The ban is reported by Slack to comply with US regulations, which even affects users who have visited nations including Iran and North Korea. Any travel to these countries (and the associated {{w|IP address}}) are found sufficient to flag an account under Slack’s new geolocation update triggering the bans. The company states “Slack complies with the U.S. regulations related to embargoed countries and regions. As such, we prohibit unauthorized Slack use in Cuba, Iran, North Korea, Syria and the Crimea region of Ukraine.”<ref>{{cite web |last1=Hatmaker |first1=Taylor |title=Slack shuts down accounts belonging to Iranian expats and users who visited Iran |url=https://techcrunch.com/2018/12/20/slack-iran/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack is banning users who have visited U.S.-sanctioned countries while using its app |url=https://mashable.com/article/slack-banning-users-from-iran-cuba-sanctioned-countries/ |website=mashable.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack Bans Iranian Academic Living in Canada Because of Sanctions |url=https://www.vice.com/en_us/article/bjek8w/slack-bans-iranian-academic-sanctions |website=vice.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=It looks like Slack, the $7 billion chat app, is banning some users because of Iran sanctions — even if they don't live or work in Iran |url=https://www.businessinsider.com/slack-bans-users-because-of-sanctions-even-if-they-dont-live-in-iran-2018-12 |website=businessinsider.com |accessdate=6 October 2019}}</ref> Later, the company would apologize for 'mistakenly' banning visitors to these countries.<ref>{{cite web |title=Slack apologizes after users who travelled to Iran had their accounts shut down |url=https://www.businessinsider.com/slack-apologizes-after-iranian-users-found-their-accounts-shut-down-2018-12 |website=businessinsider.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack apologizes|url=https://9to5mac.com/2018/12/22/slack-iran-deactivating-accounts/ |website=9to5mac.com |accessdate=6 October 2019}}</ref>
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| 2018 || December 20 || User expulsion || A number of Slack users related to countries embargoed by the United States have their accounts deactivated and their free access revoked. The ban is reported by Slack to comply with US regulations, which even affects users who have visited nations including Iran and North Korea. Any travel to these countries (and the associated {{w|IP address}}) are found sufficient to flag an account under Slack’s new geolocation update triggering the bans. The company states “Slack complies with the U.S. regulations related to embargoed countries and regions. As such, we prohibit unauthorized Slack use in Cuba, Iran, North Korea, Syria and the Crimea region of Ukraine.”<ref>{{cite web |last1=Hatmaker |first1=Taylor |title=Slack shuts down accounts belonging to Iranian expats and users who visited Iran |url=https://techcrunch.com/2018/12/20/slack-iran/ |website=techcrunch.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack is banning users who have visited U.S.-sanctioned countries while using its app |url=https://mashable.com/article/slack-banning-users-from-iran-cuba-sanctioned-countries/ |website=mashable.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack Bans Iranian Academic Living in Canada Because of Sanctions |url=https://www.vice.com/en_us/article/bjek8w/slack-bans-iranian-academic-sanctions |website=vice.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=It looks like Slack, the $7 billion chat app, is banning some users because of Iran sanctions — even if they don't live or work in Iran |url=https://www.businessinsider.com/slack-bans-users-because-of-sanctions-even-if-they-dont-live-in-iran-2018-12 |website=businessinsider.com |accessdate=6 October 2019}}</ref> Later, the company would apologize for 'mistakenly' banning visitors to these countries.<ref>{{cite web |title=Slack apologizes after users who travelled to Iran had their accounts shut down |url=https://www.businessinsider.com/slack-apologizes-after-iranian-users-found-their-accounts-shut-down-2018-12 |website=businessinsider.com |accessdate=6 October 2019}}</ref><ref>{{cite web |title=Slack apologizes|url=https://9to5mac.com/2018/12/22/slack-iran-deactivating-accounts/ |website=9to5mac.com |accessdate=6 October 2019}}</ref>
 
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| 2019 || January 16 || || Slack introduces new logo, and announces redesign of other elements of its website, marketing materials, and "some places in the product" in the coming months to align with the new design.<ref>{{cite web |title=SLACK'S NEW LOGO GETS RIPPED BY USERS: 'COLORFUL SWASTIKA' |url=https://www.newsweek.com/slack-new-logo-redesign-swastika-twitter-1295161 |website=newsweek.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack has a new logo and it's ... fine |url=https://mashable.com/article/slack-redesigned-new-logo/ |website=mashable.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Behold, Slack’s new logo |url=https://techcrunch.com/2019/01/16/behold-slacks-new-logo/ |website=techcrunch.com |accessdate=9 October 2019}}</ref>
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| 2019 || January 16 || Product || Slack introduces new logo, and announces redesign of other elements of its website, marketing materials, and "some places in the product" in the coming months to align with the new design.<ref>{{cite web |title=SLACK'S NEW LOGO GETS RIPPED BY USERS: 'COLORFUL SWASTIKA' |url=https://www.newsweek.com/slack-new-logo-redesign-swastika-twitter-1295161 |website=newsweek.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack has a new logo and it's ... fine |url=https://mashable.com/article/slack-redesigned-new-logo/ |website=mashable.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Behold, Slack’s new logo |url=https://techcrunch.com/2019/01/16/behold-slacks-new-logo/ |website=techcrunch.com |accessdate=9 October 2019}}</ref>
 
|-
 
|-
 
| 2019 || January 29 || Userbase || Slack reports more than 10 million daily active users, up from 8 million in May 2018. At least 85,000 organizations use the service to help employees communicate with each other.<ref>{{cite web |title=Slack now has more than 10 million daily active users |url=https://techcrunch.com/2019/01/29/slack-now-has-more-than-10-million-daily-active-users/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack passes 10 million daily active users |url=https://venturebeat.com/2019/01/29/slack-passes-10-million-daily-active-users/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Email rival Slack says it has 10 million daily active users |url=https://www.reuters.com/article/us-slack-users/email-rival-slack-says-it-has-10-million-daily-active-users-idUSKCN1PN2T2 |website=reuters.com |accessdate=9 October 2019}}</ref>
 
| 2019 || January 29 || Userbase || Slack reports more than 10 million daily active users, up from 8 million in May 2018. At least 85,000 organizations use the service to help employees communicate with each other.<ref>{{cite web |title=Slack now has more than 10 million daily active users |url=https://techcrunch.com/2019/01/29/slack-now-has-more-than-10-million-daily-active-users/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack passes 10 million daily active users |url=https://venturebeat.com/2019/01/29/slack-passes-10-million-daily-active-users/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Email rival Slack says it has 10 million daily active users |url=https://www.reuters.com/article/us-slack-users/email-rival-slack-says-it-has-10-million-daily-active-users-idUSKCN1PN2T2 |website=reuters.com |accessdate=9 October 2019}}</ref>
 
|-
 
|-
−
| 2019 || February 4 || || Slack announces having confidentially applied with the {{w|U.S. Securities and Exchange Commission}} to list shares publicly, moving the company a step closer to going public.<ref>{{cite web |title=Slack makes confidential filing to go public |url=https://www.reuters.com/article/us-slack-ipo/slack-makes-confidential-filing-for-ipo-idUSKCN1PT1T8 |website=reuters.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack confidentially files to go public |url=https://edition.cnn.com/2019/02/04/tech/slack-ipo-filing/index.html |website=edition.cnn.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Message Platform Slack Moves Ahead Amid Direct Listing Plans |url=https://www.bloomberg.com/news/articles/2019-02-04/messaging-platform-provider-slack-says-it-s-filed-to-go-public |website=bloomberg.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack to go public in one of the first major IPOs of 2019 |url=https://qz.com/1541844/slack-to-go-public-in-one-of-the-first-major-silicon-valley-ipos-of-2019/ |website=qz.com |accessdate=9 October 2019}}</ref>  
+
| 2019 || February 4 || Financial || Slack announces having confidentially applied with the {{w|U.S. Securities and Exchange Commission}} to list shares publicly, moving the company a step closer to going public.<ref>{{cite web |title=Slack makes confidential filing to go public |url=https://www.reuters.com/article/us-slack-ipo/slack-makes-confidential-filing-for-ipo-idUSKCN1PT1T8 |website=reuters.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack confidentially files to go public |url=https://edition.cnn.com/2019/02/04/tech/slack-ipo-filing/index.html |website=edition.cnn.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Message Platform Slack Moves Ahead Amid Direct Listing Plans |url=https://www.bloomberg.com/news/articles/2019-02-04/messaging-platform-provider-slack-says-it-s-filed-to-go-public |website=bloomberg.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack to go public in one of the first major IPOs of 2019 |url=https://qz.com/1541844/slack-to-go-public-in-one-of-the-first-major-silicon-valley-ipos-of-2019/ |website=qz.com |accessdate=9 October 2019}}</ref>  
 
|-
 
|-
 
| 2019 || February 5 || Competition || Private, open source Slack competitor {{w|Mattermost}} raises US$20 million in Series A Funding for its workplace chat app. As of date, Mattermost is the fastest growing messaging platform for engineering teams at large organizations.<ref>{{cite web |title=Slack competitor Mattermost raises $20 million for its workplace chat app |url=https://venturebeat.com/2019/02/05/slack-competitor-mattermost-raises-20-million-for-its-workplace-chat-app/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Mattermost Raises $20 Million Series A Funding to Bring High-Trust Messaging to Security-Conscious Enterprises |url=https://www.globenewswire.com/news-release/2019/02/05/1710577/0/en/Mattermost-Raises-20-Million-Series-A-Funding-to-Bring-High-Trust-Messaging-to-Security-Conscious-Enterprises.html |website=globenewswire.com |accessdate=9 October 2019}}</ref>
 
| 2019 || February 5 || Competition || Private, open source Slack competitor {{w|Mattermost}} raises US$20 million in Series A Funding for its workplace chat app. As of date, Mattermost is the fastest growing messaging platform for engineering teams at large organizations.<ref>{{cite web |title=Slack competitor Mattermost raises $20 million for its workplace chat app |url=https://venturebeat.com/2019/02/05/slack-competitor-mattermost-raises-20-million-for-its-workplace-chat-app/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Mattermost Raises $20 Million Series A Funding to Bring High-Trust Messaging to Security-Conscious Enterprises |url=https://www.globenewswire.com/news-release/2019/02/05/1710577/0/en/Mattermost-Raises-20-Million-Series-A-Funding-to-Bring-High-Trust-Messaging-to-Security-Conscious-Enterprises.html |website=globenewswire.com |accessdate=9 October 2019}}</ref>
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|-
 
|-
 
| 2019 || March 11 || Product || Slack releases a dark mode feature in the latest app update for {{w|iOS}} and [[w:Android (operating system)|Android]], adding one of the most commonly requested features for any application.<ref>{{cite web |title=How to turn on Slack’s dark mode on iOS and Android |url=https://thenextweb.com/apps/2019/03/12/how-to-turn-on-slacks-dark-mode-on-ios-and-android/ |website=thenextweb.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Dark mode comes out of beta in Slack’s latest update for iOS and Android |url=https://www.theverge.com/2019/3/11/18260488/slack-dark-mode-ios-android-mobile-out-of-beta |website=theverge.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack adds dark mode to its iOS, Android apps |url=https://www.cnet.com/news/slack-adds-dark-mode-to-its-ios-android-apps/ |website=cnet.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=If You Must Use Slack on Your Phone, Why Not Do It in Dark Mode? |url=https://gizmodo.com/if-you-must-use-slack-on-your-phone-why-not-do-it-in-d-1833180527 |website=gizmodo.com |accessdate=9 October 2019}}</ref>
 
| 2019 || March 11 || Product || Slack releases a dark mode feature in the latest app update for {{w|iOS}} and [[w:Android (operating system)|Android]], adding one of the most commonly requested features for any application.<ref>{{cite web |title=How to turn on Slack’s dark mode on iOS and Android |url=https://thenextweb.com/apps/2019/03/12/how-to-turn-on-slacks-dark-mode-on-ios-and-android/ |website=thenextweb.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Dark mode comes out of beta in Slack’s latest update for iOS and Android |url=https://www.theverge.com/2019/3/11/18260488/slack-dark-mode-ios-android-mobile-out-of-beta |website=theverge.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack adds dark mode to its iOS, Android apps |url=https://www.cnet.com/news/slack-adds-dark-mode-to-its-ios-android-apps/ |website=cnet.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=If You Must Use Slack on Your Phone, Why Not Do It in Dark Mode? |url=https://gizmodo.com/if-you-must-use-slack-on-your-phone-why-not-do-it-in-d-1833180527 |website=gizmodo.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || March 14 || User expulsion || Slack announces removal of 28 accounts with a “clear affiliation with known hate groups.” The announcement comes after leaked Slack messages show members of American {{w|neo-Nazi}} group {{w|Identity Evropa}} organizing meet-ups and plans to distribute fliers promoting their “white racial consciousness” organization in cities across the United States.<ref>{{cite web |title=Slack removes 28 accounts linked to hate groups |url=https://techcrunch.com/2019/03/14/slack-hate-groups/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack says it removed dozens of accounts affiliated with hate groups |url=https://www.theverge.com/2019/3/14/18265796/slack-removes-accounts-hate-groups-moderation-chat |website=theverge.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack removed 28 accounts with ties to hate groups |url=https://www.engadget.com/2019/03/14/slack-removed-28-accounts-with-ties-to-hate-groups/ |website=engadget.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=FIRST AT TPM: Slack Deletes Hate Group Accounts After Leaks Of Private Chats |url=https://talkingpointsmemo.com/muckraker/slack-removes-hate-group-accounts-leaks-identity-evropa-chats |website=talkingpointsmemo.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || March 18 || Product || Slack introduces enterprise key management (EKM), a feature that allows businesses to better secure sensitive stored data, including messages, files and comments. This new tool enables customers to control their encryption keys in the enterprise version of Slack.<ref>{{cite web |title=Slack launches encryption keys so businesses can protect their data |url=https://venturebeat.com/2019/03/18/slack-launches-encryption-keys-so-businesses-can-protect-their-data/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack rolls out enterprise key management, but has no plans for end-to-end encryption |url=https://www.computerworld.com/article/3368503/slack-rolls-out-enterprise-key-management-but-has-no-plans-for-end-to-end-encryption.html |website=computerworld.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack launches Enterprise Key Management, a tool that gives admins control over encryption keys |url=https://www.zdnet.com/article/slack-launches-enterprise-key-management-a-tool-that-gives-admins-control-over-encryption-keys/ |website=zdnet.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack hands over control of encryption keys to regulated customers |url=https://techcrunch.com/2019/03/18/slack-hands-over-encryption-keys-to-regulated-customers/ |website=techcrunch.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || April 26 || Financial || Slack files to go public via a direct listing, which excludes a traditional {{w|IPO}}, instead allowing existing shareholders to sell their stock to investors.<ref>{{cite web |title=Slack files to go public with an unusual approach |url=https://edition.cnn.com/2019/04/26/tech/slack-files-to-go-public/index.html |website=edition.cnn.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack files to go public, reports $138.9M in losses on revenue of $400.6M |url=https://techcrunch.com/2019/04/26/slack-files-to-go-public/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack Discloses $141 Million Loss as Messaging Start-Up Joins Tech Listing Rush |url=https://www.nytimes.com/2019/04/26/technology/slack-filing.html |website=nytimes.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack IPO Filing Shows Sharp Revenue Growth but Continued Losses |url=https://www.wsj.com/articles/slack-files-to-go-public-via-direct-listing-11556285357 |website=wsj.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || April 24 || Product || Slack introduces update allowing customers to connect with other users, even if they don't use the app itself. Users can send a Slack message straight to someone's email. The recipient can then join the Slack conversation, or reply via email.<ref>{{cite web |title=Slack, the hot workplace chat app, launches new ways to integrate with email ahead of its much-anticipated IPO |url=https://www.businessinsider.com/slack-new-updates-send-messages-non-slack-users-email-2019-4 |website=businessinsider.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack to extend collaboration to folks who don’t want to give up email |url=https://techcrunch.com/2019/04/24/slack-to-extend-collaboration-to-folks-who-dont-want-to-give-up-email/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Messaging Startup Slack Is Expected to File Listing Prospectus This Week |url=https://www.wsj.com/articles/messaging-startup-slack-is-expected-to-file-listing-prospectus-this-week-11556143120 |website=wsj.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || June 20 || Financial || Slack {{w|IPO}} starts trading at US$38.50 per share, giving the company a US$23 billion valuation, well above the expected $16 billion. The company becomes the second large venture capital-backed business to complete a direct listing, instead of an initial public offering. This alternative path to the public markets allows businesses to go public without selling new shares of its stock.<ref>{{cite web |title=Slack IPO starts trading at $38.50 for $23 billion valuation |url=https://venturebeat.com/2019/06/20/slack-ipo-starts-trading-at-38-50-for-23-billion-valuation/ |website=venturebeat.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack’s value rockets as stock closes up 48.5% in public debut |url=https://techcrunch.com/2019/06/20/slacks-value-rockets-as-stock-closes-up-48-5-in-public-debut/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack reference price for direct listing set at $26/share |url=https://www.reuters.com/article/us-slack-listing-reference-price/slack-reference-price-for-direct-listing-set-at-26-share-idUSKCN1TK31V |website=reuters.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Slack is a 'very significant' company: IPO ETF manager |url=https://sports.yahoo.com/slack-is-a-very-significant-company-ipo-etf-manager-195502358.html |website=sports.yahoo.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || June 22 || Competition || {{w|Microsoft}} adds Slack to its list of “prohibited and discouraged technology”, and bans its employees from using the chat app for security reasons, instead encouraging them to to use the Microsoft Teams app.<ref>{{cite web |title=Microsoft reportedly bans its employees from using Slack for security reasons and encourages them to to use the Microsoft Teams app instead |url=https://www.businessinsider.com/microsoft-reportedly-bans-employees-from-using-slack-2019-6 |website=businessinsider.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft bans Slack and discourages AWS and Google Docs use internally |url=https://www.theverge.com/2019/6/22/18713270/microsoft-slack-ban-aws-google-docs-prohibited-list-details |website=theverge.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft Bans Employees From Using Slack, Has AWS and Google Docs on a 'Discouraged' List |url=https://gizmodo.com/microsoft-bans-employees-from-using-slack-has-aws-and-1835770652 |website=gizmodo.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft thinks Slack not secure enough, prohibits internal use |url=https://www.digitaltrends.com/computing/microsoft-reportedly-prohibits-employees-from-using-slack/ |website=digitaltrends.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || July 11 || Competition || {{w|Microsoft Teams}} reports more than 13 million daily users, along with more than 19 million weekly active users. This figure surpasses the more than 10 million people who use Slack daily.<ref>{{cite web |title=Microsoft Teams overtakes Slack with 13 million daily users |url=https://www.theverge.com/2019/7/11/20689143/microsoft-teams-active-daily-users-stats-slack-competition |website=theverge.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft Teams is now officially bigger than Slack |url=https://arstechnica.com/gadgets/2019/07/microsoft-teams-is-now-officially-bigger-than-slack/ |website=arstechnica.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft says Teams now has 13M daily active users |url=https://techcrunch.com/2019/07/11/microsoft-says-its-slack-competitor-teams-now-has-13-million-daily-active-users/ |website=techcrunch.com |accessdate=9 October 2019}}</ref><ref>{{cite web |title=Microsoft says its Teams app is bigger than Slack and growing faster |url=https://www.cnbc.com/2019/07/11/microsoft-teams-passes-slack-in-daily-users-rajesh-jha-explains-why.html |website=cnbc.com |accessdate=9 October 2019}}</ref>
 +
|-
 +
| 2019 || August 6 || Product || Slack releases a number of updates with the purpose to provide a secure way for businesses to share and collaborate online. Among the updates there's the ability for administrators to require {{w|Touch ID}} or {{w|Face ID}} or to enter a passcode on a mobile device. In addition, administrators can wipe Slack conversations remotely if a user reports a device stolen.<ref>{{cite web |title=Slack makes some key security enhancements |url=https://techcrunch.com/2019/08/06/slack-makes-some-key-security-enhancements/ |website=techcrunch.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=Slack ups security to keeps your chats protected |url=https://www.techradar.com/au/news/slack-ups-security-to-keeps-your-chats-protected |website=techradar.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=Slack now supports Face ID and Touch ID for two-factor authentication |url=https://venturebeat.com/2019/08/06/slack-now-supports-face-id-and-touch-id-for-two-factor-authentication/ |website=venturebeat.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=Slack's new security features give enterprise admins more control over data |url=https://www.techrepublic.com/article/slacks-new-security-features-give-enterprise-admins-more-control-over-data/ |website=techrepublic.com |accessdate=10 October 2019}}</ref>
 +
|-
 +
| 2019 || August 14 || Product || Slack introduces admin workflow automation and announcement channels aimed at larger organizations, facilitating administrators to limit how employees talk to each other with notification channels that form a new kind of Slack chat space. Ability is introduced for administrators to designate any channel to be used for announcements only, a move aimed at minimizing distractions and ensuring that important information is communicated to workers.<ref>{{cite web |title=Slack announces new admin features for larger organizations |url=https://techcrunch.com/2019/08/14/latest-slack-features-are-geared-towards-admins-in-large-organizations/ |website=techcrunch.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=Slack launches admin workflow automation and announcement channels |url=https://venturebeat.com/2019/08/14/slack-launches-admin-workflow-automation-and-announcement-channels/ |website=venturebeat.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=Slack touts ‘announcement channels’ for team update broadcasts |url=https://www.computerworld.com/article/3431857/slack-touts-announcement-channels-to-broadcast-team-updates.html |website=computerworld.com |accessdate=10 October 2019}}</ref>
 +
|-
 +
| 2019 || September 12 || Product || Slack introduces dark mode on [[w:Desktop computer|desktop]] for [[w:Microsoft Windows|Windows]], {{w|macOS}}, and {{w|Linux}} users.<ref>{{cite web |title=Slack launches dark mode for macOS, Windows, and Linux |url=https://www.theverge.com/2019/9/12/20862234/slack-dark-mode-macos-windows-linux-desktop-features |website=theverge.com |accessdate=10 October 2019}}</ref><ref>{{cite web |title=How to enable dark mode in Slack on your desktop |url=https://thenextweb.com/basics/2019/09/13/how-to-enable-dark-mode-in-slack-on-your-desktop/ |website=thenextweb.com |accessdate=10 October 2019}}</ref>
 +
|-
 +
| 2020 || November 30 || Acquisition || American cloud-based software company {{w|Salesforce}} signs definitive agreement to acquire Slack, in a deal valued at US$27.7 billion. Slack shareholders would receive, under the terms of the agreement, US$26.79 in cash and 0.0776 shares of Salesforce common stock for each Slack share.<ref>{{cite web |title=Salesforce Signs Definitive Agreement to Acquire Slack |url=https://investor.salesforce.com/press-releases/press-release-details/2020/Salesforce-Signs-Definitive-Agreement-to-Acquire-Slack/default.aspx |website=investor.salesforce.com |access-date=25 February 2021}}</ref><ref>{{cite web |title=Salesforce buys Slack in a $27.7B megadeal |url=https://techcrunch.com/2020/12/01/salesforce-buys-slack/?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAAJn6MLbq703fLpCPhaDOWTbsS8O8jRqH056R6bkXLnNKsGiARzw0YNAhBTzN2PqlP6t2rFDYT4YXHAEqKhlTXCGGMrIrj-zPq3wtLKrsu0KKh_qMZv4GKY615gfC2TAm14topbTTo22in2iZBgX75_Vpy-iQM1TSU0YeRYQfBLob |website=TechCrunch |access-date=25 February 2021}}</ref><ref>{{cite web |last1=Newton |first1=Casey |title=How Microsoft crushed Slack |url=https://www.theverge.com/22150313/how-microsoft-crushed-slack-salesforce-acquisition |website=The Verge |access-date=25 February 2021 |language=en |date=3 December 2020}}</ref>
 
|-
 
|-
 
|}
 
|}
 +
 +
== Visual data ==
 +
[[File:Evolution of Slack’s daily active users (DAU) and paid seats.png|thumb|center|600px|Evolution of Slack’s daily active users (DAU) and paid seats.]]
 +
 +
=== Google Trends ===
 +
 +
The comparative chart below shows {{w|Google Trends}} data for Slack (Software), Microsoft Teams (Topic) and Google Meet (Topic), from August 2013 to April 2021, when the screenshot was taken. Interest is also ranked by country and displayed on world map.<ref>{{cite web |title=Slack, Microsoft Teams and Google Meet |url=https://trends.google.com/trends/explore?date=2013-08-01%202021-04-14&q=%2Fm%2F0zdp3l0,%2Fg%2F11csb2gq0p,%2Fg%2F11jg1s1tmv |website=Google Trends |access-date=14 April 2021}}</ref>
 +
 +
[[File:Slack, Microsoft Teams and Google Meet gt.png|thumb|center|600px]]
 +
 +
=== Google Ngram Viewer ===
 +
 +
The chart below shows {{w|Google Ngram Viewer}} data for Slack Technologies, from 2010 to 2019.<ref>{{cite web |title=Slack Technologies |url=https://books.google.com/ngrams/graph?content=Slack+Technologies&year_start=2010&year_end=2019&corpus=26&smoothing=3&direct_url=t1%3B%2CSlack%20Technologies%3B%2Cc0 |website=books.google.com |access-date=26 April 2021 |language=en}}</ref>
 +
 +
[[File:Slack Technologies ngram.png|thumb|center|700px]]
 +
 +
=== Wikipedia Views ===
 +
 +
The comparative chart below shows pageviews on desktop of the English Wikipedia articles {{w|Microsoft Teams}}, {{w|Slack (software)}} and {{w|Google Meet}}, from July 2015 to March 2021.<ref>{{cite web |title=Microsoft Teams, Slack (software) and Google Meet |url=https://wikipediaviews.org/displayviewsformultiplemonths.php?pages[0]=Slack+%28software%29&pages[1]=Microsoft+Teams&pages[2]=Google+Meet&allmonths=allmonths-api&language=en&drilldown=desktop |website=wikipediaviews.org |access-date=26 April 2021}}</ref>
 +
 +
[[File:Microsoft Teams, Slack (software) and Google Meet wv.png|thumb|center|450px]]
  
 
==Meta information on the timeline==
 
==Meta information on the timeline==

Latest revision as of 17:57, 9 April 2024

This is a timeline of Slack, a cloud-based set of team collaboration tools and services, founded by Stewart Butterfield.[1]

Big picture

Time period Development summary
2009 (January) – 2012 (December) Glitch era. Tiny Speck is founded and launches the game, using Slack as an internal tool. Glitch would close in December 2012.
2013 (August) onwards Slack era. After the closure of Glitch, Tiny Speck launches Slack as a real-time collaboration app and platform.
2014 (August) onwards Slack Technologies era. Tiny Speck renames itself to Slack Technologies, Inc. Service collaboration consolidates with major startups such as LinkedIn and Dropbox. By 2015, Slack daily active users growth peaks. In 2017 Slack is declared the best startup of the year at the Crunchies.
2016 and 2017 Facebook and Microsoft launch their own products to compete with Slack. By 2017, Slack gains more than 150 Enterprise Grid customers from renowned businesses, including 21st Century Fox, IBM, Capital One, and Liberty Mutual, etc.[2]
2018 Slack surpasses 8 million users, and over 600 different software are estimated to be integrated with it.[3]
2019 Slack goes public. Daily active users exceed 10 million.[3]
2020 Slack is acquired by Salesforce.


Full timeline

Year Month and date Event type Details
2009 July 9 Prelude Canadian entrepreneur Stewart Butterfield sends a tweet announcing that his new company, Tiny Speck is hiring. [4][5] Tiny Speck is founded as a Canadian software company in Vancouver, British Columbia. The core team is largely drawn from the founders of Ludicorp, the company that created Flickr, an image- and video-hosting website and web services suite.[6] Slack begins as an internal tool used by Tiny Speck, for Glitch, a game in development at the time.[7][8]
2010 February 9 Prelude Tiny Speck raises US$1,500,000 in seed funding from the A-list VC shop Accel Partners.[9]
2010 April 1 Prelude Tiny Speck raises $5 million in Series A funding from Accel Partners and Andreessen Horowitz.[10]
2011 April 11 Prelude Tiny Speck raises US$10.7 million Series B round from Andreessen Horowitz and Accel Partners to spur the full-on push. It is also announced that Glitch would open up to beta testing.[11]
2011 September 27 Prelude Tiny Speck opens Glitch to the public as a 2D browser-based massively multiplayer online game, after it being in development for 23 months. The game launches free to play, with subscription and virtual currency options.[12][13][14][15][16]
2012 December 9 Prelude Glitch closes down after failing to get enough user traction, and then failing to find a buyer for the product. Butterfield announces to be working at finding new jobs for the 30 or so people who were getting laid off.[17][18][19][20]
2013 August 14 Creation In a preview release, Tiny Speck launches Slack as a tool for office collaboration and communication. The software is meant to reduce or eliminate workplace email, and to compete with services like Yammer and Campfire.[21][22][23][24]
2013 August 15 Userbase Slack signs up 8,000 companies in 24 hours.[25]
2014 February Userbase The data for Slack's first six-month usage period since the preview release is published, showing that nearly 16,000 users were registered without the use of any form of advertising —growth was based solely upon word-of-mouth.[26]
2014 February 12 Service Slack exits Beta and goes Freemium.[27][28][29][30][31][32]
2014 April 25 Funding Tiny Speck raises US$42.75 million. At the time it reports 60,000 daily users and 15,000 paid seats.[33][34][35][36][37]
2014 August 28 Rebranding After the launch of Slack, Tiny Speck renames itself to Slack Technologies.[38]
2014 September 26 Acquisition Slack makes its first acquisition by purchasing bootstrapped startup Spaces, a tool that lets people work in the same document simultaneously and remotely.[39][40][41][42][43]
2014 October 31 Funding Slack raises $120 million in venture capital with a $1.2 billion valuation led by Kleiner Perkins Caufield & Byers and Google Ventures. At this point, Slack is considered now the fastest-growing workplace software ever.[44][45][46][47][48][49][50]
2014 November 21 Interview In an interview with the MIT Technology Review, Slack CEO Stewart Butterfield comments about Slack: "Certainly I feel that what we have right now is just a giant piece of shit. Like, it’s just terrible and we should be humiliated that we offer this to the public".[51][52][53]
2015 January 28 Acquisition Slack announces the acquisition of Screenhero, a collaborative screen sharing app that lets users speak to each other and access each other’s screens for editing and more.[54][55][56][57][58][59][60]
2015 February 12 Userbase Slacks announces 10,000 new daily active users signing up each week, with more than 60,000 teams and 135,000 paid accounts. The company claims it has 500,000 daily active users, having doubled twice in the last two quarters.[61]
2015 March 26 Funding Slack signs a deal with investors to raise up to $160 million in a funding round that valued the company at $2.76 billion. New investors include Institutional Venture Partners, Horizons Ventures, Index Ventures and DST Global.[62]
2015 March 27 Security Slack confirms its central user database was hacked over the course of four days, compromising some number of users' data. In response to the hack, the company fires up two new security features: two factor authentication, and a team-wide password kill switch.[63][64][65][66][67][68]
2015 April 16 Funding Slack raises US$160 million, at a post-money valuation of US$2.8 billion. Slack reports being used daily by 750,000 workers.[69]
2015 May 14 Expansion (office) Slack opens its Dublin headquarters, its first office in Europe.[70][71]
2015 June 24 Userbase Slack announces having surpassed 1 million active users each day, including 300,000 “paid seats,” which refers to the number of people using Slack as paying customers. So far, the company reports $25 million in annual recurring revenue.[72]
2016 January 26 Expansion (product) Noah Weiss, who previously worked at Google and Foursquare on collaboration and search products, is hired by Slack to lead its Search, Learning, & Intelligence (SLI) Group in its new New York City office.[73][74]
2016 April 1 Funding Slack announces having raised US$200 million at a US$3.8 billion post-money valuation.[75]
2016 June 10 Outage Slack has a partial outage for 90 minutes affecting file uploads and downloads.[76]
2016 September Recognition Slack is ranked #1 on the Forbes Cloud 100 list.[77][78][79][80][81]
2016 October 17 Partnership IBM and Slack launch a partnership with the plan of applying Watson's cognitive technology to Slack's collaboration tools and bots, in a deal to benefit both parties. A plugin built by IBM would be released on GitHubwill to give Slack developers access to the Watson Conversation API.[82][83][84][85][86]
2016 October 25 Competition Microsoft announces plan to launch Microsoft Teams, a new software which is expected to be very similar to Slack and work as an alternative. The platform combines workplace chat, meetings, notes, and attachments.[87][88][89][90][91]
2016 November 4 Team Slack’s first Chief Marketing Officer Bill Maciatis departs the company.[92][93]
2016 November 15 Collaboration Business analytics software company Sisense announces bots for Slack, Skype, Facebook Messenger and Telegram.[94]
2016 December 7 Partnership Slack and Google announce partnership focused on better integrating their services, bringing a number of new features, including deeper integrations with Google services. Among the additions are new bots for notifications, as well as support for Google’s recently launched Team Drives, document previews and permissioning, etc.[95][96][97][98][99]
2017 January 6 Funding Slack reveals 11 more companies backed through its US$80 million fund, which is dedicated to early-stage investments in companies building apps in Slack. The latest Slackbot companies to receive funding include Statsbot, SwayFinance, Guru, Bold, Demisto, DataFox, Troops, WorkRamp, Synervoz, Twine, and Donut.[100][101][102][103][104][105]
2017 January 17 Expansion (office) Slack opens a new office in Dublin, where it has had its European headquarters since May 2015. The new office is intended to accommodate the growth of employee headcount in the European customer experience, sales and business operations teams.[106][107]
2017 January 18 Product Slack launches threaded messaging, a tool meant to connect related messages inside a given chatroom.[108][109][110][111]
2017 January 19 Expansion (office) Slack's New York City headquarters, designed by architecture firm Snøhetta, opens around this time.[112][113]
2017 February 1 Service Slack announces a new enterprise version, aimed at helping companies administer and connect multiple chat instances.[114]
2017 February 6 Recognition Slack is declared the best startup of the year at the Crunchies, an industry award given by several technology blogs to the Silicon Valley companies and venture capitalists they cover.[115]
2017 February 8 Collaboration PayPal launches a bot meant for Slack users to send P2P payments, all while staying within the Slack team messaging app. The service is announced for users in the United States, the United Kingdom, Canada and Australia.[116][117][118][119][120]
2017 February 24 Collaboration Dropbox releases an open-source Slack bot to tackle unauthorized access and other security incidents in the workplace. The so called Securitybot can automatically grab alerts from security monitoring tools and verify incidents with other employers.[121]
2017 April 11 Service Slack launches in-message drop-down menus for apps, a feature to help its users better connect with apps they need at work.[122][123]
2017 April 18 Competition Facebook plans on offering a free version of its Slack competitor Workplace, a collaborative platform run by the company.[124][125][126][127][128][129]
2017 May 4 Expansion (office) Slack opens a new office in London, its second in Europe after its Dublin headquarters, and seventh globally.[130][131]
2017 May 10 Outage Slack is briefly down for some users due to a DDoS attack experienced by its CDN provider.[132]
2017 May 16 Ecosystem Slack adds screen sharing for video calls, an update based on the acquisition of Screenhero two years ago.[133][134][135][136]
2017 June 13 Collaboration Astro Technology integrates its AI powered email bot (used for cleaning up the user's inbox) with Slack and Alexa. Slack users would be able to configure Astrobot, the startup’s bot, to notify them about important messages.[137][138][139][140][141]
2017 June 15 Funding Slack pursues a US$500 million fundraising round that would value the company at US$5 billion. Tools made by the company are now used daily by five million people, up from four million in October 2016.[142][143][144][145][146]
2017 September 17–18 Funding Slack closes a $250 million funding round led by SoftBank,[147] which values the company at US$5.1 billion.[148][149]
2017 September 22 Outage Many users report difficulty connecting with Slack. Slack confirms that it experienced and resolved a small "connectivity blip".[150]
2017 October 31 Outage Slack goes down at 3:58 PM Pacific Time (22:58 UTC), with users unable to send or receive messages or access Slack history beyond what is already cached on their local client. The outage is resolved in about two hours.[151][152][153]
2018 January 17 Product Slack releases new functionality consisting of private shared channels, with the purpose to make the service more useful for businesses dealing with confidential or classified content.[154][155]
2018 February 28 Competition Google releases Google Hangouts, a service that allows users to message each other privately or in groups, and work collaboratively on projects. Similar to Slack, it also provides other Google products such as Docs, Sheets, Slides, Calendar and Cloud Search.[156][157][158]
2018 March 22 Partnership Slack partners with HCM platform Workday, with the purpose to merge their individual expertise to reach employees. The partnership ís expected "to allow employees to request time-off via Slack, allow real-time peer feedback, make looking up coworker info simpler and, eventually, offer customized notifications and simplified Slack channel assignments."[159]
2018 April 12 Product Slack Enterprise Grid adds security, compliance tools, enhancing its scalability and security. The upgrades include tools for auditing and device management, in addition to onboarding features that makes it easier to add new employees to Slack channels.[160]
2018 April 20 Policy Slack updates privacy policy, allowing employers to download and read direct messages sent between co-workers without telling them.[161][162][163]
2018 May 8 Userbase Slack reports 8 million daily active users and 3 million paid users.[164][165][166][167]
2018 May 22 Product Slack introduces Actions, a set of new developer tools, to make it easier to create and finish tasks without leaving. Developers including Asana, Jira, Pocket, and Zendesk have newly integrated “action buttons” letting users perform actions on those services directly from Slack messages.[168][169][170][171]
2018 July 12 Competition Microsoft releases a free version of Microsoft Teams, the company’s Slack competitor. The free version is expected to include support for up to 300 people, with unlimited chat messages and search, whereas Slack’s free version is limited to 10,000 searchable messages, 10 app integrations, 5GB of file storage, no guest accounts, and only 1:1 video chats.[172][173][174][175]
2018 July 17 Acquisition Slack acquires Robots and Pencils’ app Missions, a tool aimed at facilitating users to automate routine processes and tasks in Slack.[176][177][178][179]
2018 July 27 Acquisition Slack acquires from Atlassian workplace chat app HipChat, with plans to shut it down and migrate users to its chat service. It also acquires Atlassian’s Stride, a successor to Hipchat tool.[180][181][182][183]
2018 August 21 Funding Slack announces having raised US$427 million in a Series H round, reaching value at over $7.1 billion. The funding is led by Dragoneer Investment Group and General Atlantic.[184][185][186]
2018 August 30 Product Slack updates its status feature to include an expiration date, allowing users to set certain statuses like commuting, meetings, and vacation to expire after a distinct amount of time.[187][188]
2018 September 24 Acquisition Slack acquires San Francisco-based email management startup Astro Technology, with the purpose to unify chat and email features.[189][190][191]
2018 December 20 User expulsion A number of Slack users related to countries embargoed by the United States have their accounts deactivated and their free access revoked. The ban is reported by Slack to comply with US regulations, which even affects users who have visited nations including Iran and North Korea. Any travel to these countries (and the associated IP address) are found sufficient to flag an account under Slack’s new geolocation update triggering the bans. The company states “Slack complies with the U.S. regulations related to embargoed countries and regions. As such, we prohibit unauthorized Slack use in Cuba, Iran, North Korea, Syria and the Crimea region of Ukraine.”[192][193][194][195] Later, the company would apologize for 'mistakenly' banning visitors to these countries.[196][197]
2019 January 16 Product Slack introduces new logo, and announces redesign of other elements of its website, marketing materials, and "some places in the product" in the coming months to align with the new design.[198][199][200]
2019 January 29 Userbase Slack reports more than 10 million daily active users, up from 8 million in May 2018. At least 85,000 organizations use the service to help employees communicate with each other.[201][202][203]
2019 February 4 Financial Slack announces having confidentially applied with the U.S. Securities and Exchange Commission to list shares publicly, moving the company a step closer to going public.[204][205][206][207]
2019 February 5 Competition Private, open source Slack competitor Mattermost raises US$20 million in Series A Funding for its workplace chat app. As of date, Mattermost is the fastest growing messaging platform for engineering teams at large organizations.[208][209]
2019 February 28 Competition Facebook announces two million paid users of its Slack rival 'Workplace' service, an enterprise-oriented version of the social network that, instead of distracting workers, lets them connect and collaborate.[210][211][212]
2019 March 11 Product Slack releases a dark mode feature in the latest app update for iOS and Android, adding one of the most commonly requested features for any application.[213][214][215][216]
2019 March 14 User expulsion Slack announces removal of 28 accounts with a “clear affiliation with known hate groups.” The announcement comes after leaked Slack messages show members of American neo-Nazi group Identity Evropa organizing meet-ups and plans to distribute fliers promoting their “white racial consciousness” organization in cities across the United States.[217][218][219][220]
2019 March 18 Product Slack introduces enterprise key management (EKM), a feature that allows businesses to better secure sensitive stored data, including messages, files and comments. This new tool enables customers to control their encryption keys in the enterprise version of Slack.[221][222][223][224]
2019 April 26 Financial Slack files to go public via a direct listing, which excludes a traditional IPO, instead allowing existing shareholders to sell their stock to investors.[225][226][227][228]
2019 April 24 Product Slack introduces update allowing customers to connect with other users, even if they don't use the app itself. Users can send a Slack message straight to someone's email. The recipient can then join the Slack conversation, or reply via email.[229][230][231]
2019 June 20 Financial Slack IPO starts trading at US$38.50 per share, giving the company a US$23 billion valuation, well above the expected $16 billion. The company becomes the second large venture capital-backed business to complete a direct listing, instead of an initial public offering. This alternative path to the public markets allows businesses to go public without selling new shares of its stock.[232][233][234][235]
2019 June 22 Competition Microsoft adds Slack to its list of “prohibited and discouraged technology”, and bans its employees from using the chat app for security reasons, instead encouraging them to to use the Microsoft Teams app.[236][237][238][239]
2019 July 11 Competition Microsoft Teams reports more than 13 million daily users, along with more than 19 million weekly active users. This figure surpasses the more than 10 million people who use Slack daily.[240][241][242][243]
2019 August 6 Product Slack releases a number of updates with the purpose to provide a secure way for businesses to share and collaborate online. Among the updates there's the ability for administrators to require Touch ID or Face ID or to enter a passcode on a mobile device. In addition, administrators can wipe Slack conversations remotely if a user reports a device stolen.[244][245][246][247]
2019 August 14 Product Slack introduces admin workflow automation and announcement channels aimed at larger organizations, facilitating administrators to limit how employees talk to each other with notification channels that form a new kind of Slack chat space. Ability is introduced for administrators to designate any channel to be used for announcements only, a move aimed at minimizing distractions and ensuring that important information is communicated to workers.[248][249][250]
2019 September 12 Product Slack introduces dark mode on desktop for Windows, macOS, and Linux users.[251][252]
2020 November 30 Acquisition American cloud-based software company Salesforce signs definitive agreement to acquire Slack, in a deal valued at US$27.7 billion. Slack shareholders would receive, under the terms of the agreement, US$26.79 in cash and 0.0776 shares of Salesforce common stock for each Slack share.[253][254][255]

Visual data

Evolution of Slack’s daily active users (DAU) and paid seats.

Google Trends

The comparative chart below shows Google Trends data for Slack (Software), Microsoft Teams (Topic) and Google Meet (Topic), from August 2013 to April 2021, when the screenshot was taken. Interest is also ranked by country and displayed on world map.[256]

Slack, Microsoft Teams and Google Meet gt.png

Google Ngram Viewer

The chart below shows Google Ngram Viewer data for Slack Technologies, from 2010 to 2019.[257]

Slack Technologies ngram.png

Wikipedia Views

The comparative chart below shows pageviews on desktop of the English Wikipedia articles Microsoft Teams, Slack (software) and Google Meet, from July 2015 to March 2021.[258]

Microsoft Teams, Slack (software) and Google Meet wv.png

Meta information on the timeline

How the timeline was built

The initial version of the timeline was written by user:Sebastian.

Funding information for this timeline is available.

What the timeline is still missing

Timeline update strategy

See also

External links

References

  1. ↑ Kumparak, Greg (February 5, 2015). "Slack's Co-Founders Take Home The Crunchie For Founder Of The Year". TechCrunch. Retrieved 2015-04-10. 
  2. ↑ "Thinking big: Slack surpasses milestone of 150 Enterprise Grid customers". siliconrepublic.com. Retrieved 5 October 2019. 
  3. ↑ 3.0 3.1 "What Is Slack? History, Funding, Integrations and Direct Listing". getkisi.com. Retrieved 20 October 2019. 
  4. ↑ Siegler, MG. "Flickr Follow-Up Project Has A Name, Tiny Speck. And They're Hiring.". techcrunch.com. Retrieved 3 October 2017. 
  5. ↑ Butterfield, Stewart. "Butterfield on Twitter". twitter.com. Retrieved 3 October 2017. 
  6. ↑ Kara Swisher. "Flickr Co-Founder Butterfield Talks About His New Game startup, Glitch". AllThingsD. Retrieved 3 October 2017. 
  7. ↑ Tam, Donna, Flickr founder plans to kill company e-mails with Slack, retrieved 3 October 2017 
  8. ↑ Thomas, Owen, Die, Email, Die! A Flickr Cofounder Aims To Cut Us All Some Slack, retrieved 3 October 2017 
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