Companies> People>Marc Andreessen

Marc Andreessen is one of the few to pioneer a software category used by over a billion people, and one of the few to co-found two billion-dollar companies. Marc co-created the highly influential Mosaic Internet Browser, co-founded Netscape, served as AOL's Chief Technology Officer, and co-founded Opsware (formerly Loudcloud). Marc currently co-chairs the board of Ning and sits on the boards of Facebook and eBay.