* [[Timeline of Y Combinator]] ('''tentative payment accepted''') ('''I only included three accelerators as competitors. I'm planning to go deeper in the subject in the [[Timeline of startup accelerators]]. Let me know if you want more discussion on competition on this timeline''').
** Y Combinator's release of application videos ✔ at https://www.ycombinator.com/video/ and there's also a fuller list at https://mittalrohit.com/59-links-for-y-combinator-application-and-interview-advice-bf90191be8ed ('''Most of the rows under Advice for startups type of event come from sources given in the latter link''').
** '''I included a row for each school batch except the ongoing Winter 2019. I think I named all the non-profits. I named also the top rated YC companies according to valuation [https://www.ycombinator.com/topcompanies/], and others with article on Wikipedia'''.
* [[Timeline of Médecins Sans Frontières]] (Tentative payment accepted)
* [[Timeline of the International Red Cross and Red Crescent Movement]] (Tentative payment accepted)