Quora

SF-based venture capital firm investing in science and technology companies solving difficult problems. The firm invests at all stages across a wide variety of sectors. Founders Fund pursues a founder-friendly investment strategy, providing maximum support with minimum interference.

Focuses on early-stage venture investing in mobile, marketplaces, social, infrastructure, and enterprise software.

Aims to generate world-class investment returns over the long term in a way that makes our partners and portfolio companies proud, as they build a unique, global investment platform.

Twice a year YC invests $500,000 per company in a large number of startups. They work intensively with the companies for three months, to get them into the best possible shape and refine their pitch to investors. Each cycle culminates in Demo Day when the startups present their companies to a carefully selected, invite-only audience.

Co-founder of PayPal, Palantir Technologies, and Founders Fund. First outside investor in Facebook.

Has backed 19 unicorns ex-Partner at Khosla Ventures, where he focused on consumer, Internet, mobile, marketplace, SaaS and consumer health businesses

Paul Graham is the author of On Lisp (1993), ANSI Common Lisp (1995), and Hackers & Painters (2004). In 1995, he and Robert Morris started Viaweb, the first SaaS company, which in 1998 became Yahoo Store. In 2002 he discovered a simple spam filtering algorithm that inspired the current generation of filters. He has an AB from Cornell and a PhD in Computer Science from Harvard.

Previously a co-founder and CEO of Justin.tv from 2007 2011 and the co-founder and CEO of Socialcam in 2012. Graduated from Yale University with a bachelor's degree in political science.