19. Neil Blumenthal and Dave Gilboa

Cofounders, Co-CEOs, Warby Parker

This year was another great one for Warby Parker, the online marketplace for vintage-inspired glasses. In June, the retailer announced it had officially sold and distributed 1 million pairs of glasses through its Buy a Pair, Give a Pair program that the company launched in 2010.

Warby Parker raised $60 million in a Series C round from investors BoxGroup, Spark Capital, General Catalyst Partners, First Round, Thrive Capital, and Tiger Global Management. It's worth about $500 million.