Y Combinator founded in 2005 by Paul graham & Jessica Livingston funded over 550 startups, and the most popular ones are Reditt , Socialcam, Dropbox, Disqus, Stripe and many more.
Y Combinator runs the most prestigious program for budding digital entrepreneurs that go two three-month funding cycles a year, one from January through March and one from June through August. YC ask the founders of each startup they fund to move to the Bay Area for the duration of their cycle, during which they work intensively with them to get the company into the best shape possible. Each cycle culminates in an event called Demo Day, at which the startups present to an audience that now includes most of the world's top startup investors.
Tags: About Y Combinator : A new model of startup funding, Jessica livingston Cofounder Y combinator