Y Combinator

Started in March 2005, Y Combinator is an American seed accelerator founded by Paul Graham, Robert Morris, Trevor Blackwell and Jessica Livingston. Y Combinator provides seed money, advice, and connections at two three-month programs per year. In exchange, Y Combinator takes about 6 percent of the company’s equity. The program includes weekly dinners where guests speak to founders and “office hours” where founders can meet individually with Y Combinator partners for advice.