hi-- i'm the director of nonprofits for YC. we're accepting applications from all of the above: social enterprises, b-corps, 501c3 nonprofits and new,unregistered nonprofits.
advice for these groups is essentially the same as for-profit companies: explain your idea or business clearly and succently.
differences between for-profit and nonprofit YC companies: we currently give a $100K donation to nonprofits in our program. but essentially, your participation in the program is exactly the same as the for-profit companies. and all the answers on our FAQ apply to nonprofit companies too.
at this early stage in funding nonprofits, YC is really interested in companies that are working on big global issues that can have a large impact on the world. but we welcome all applications and look forward to seeing what you're working on. if you have other specific questions, please let me know. i'd be happy to answer them.
