An early Internet company cofounded by Dr. James Clark (of SGI) and Marc Andreessen (see Mosaic), Netscape released its Web browser software in 1994, free of charge. They did this in order to be first-to-market and to gain market share. The company cashed in on the Web with a legendary IPO in August of 1995. It valued them at more than $4 billion dollars and led the way for many more wildly successful IPOs. For many Web developers, Netscape was the beloved underdog competing against Microsoft, and it was the popular choice for source code and Web browsing. Some estimates claim nearly half of all Web browsing is done with Netscape Navigator. The Netscape.com Web site itself is now a portal (where you can still download versions of their browser for free), and the company, still based in Mountain View, California, was acquired by America Online.