Market cap in 1995: $5.4 billion
Market cap in 2015: Doesn’t exist
What it does: Netscape was once the most widely used web browsers in the world, accounting for over 90% of the market in the mid-90s. It went public in 1995, one year after its founding, and according to Meeker, was the most valuable internet company that year. But Microsoft Explorer soon caught on and took over as the de facto dominant web browser. In 1999, AOL acquired Netscape for $4.2 billion, but by the mid-2000s, it pretty much disappeared from the market, although its core technology lives on within the open-source Mozilla Foundation and its Firefox browser. Marc Andreessen, one of the cofounders of Netscape, is now running Andreessen Horowitz, one of the most powerful VC firms in the world.