Originally Mosaic Communications, Netscape was the company that would create the first Web browser to enjoy mainstream usage. But it became hobbled both by tough competition from Microsoft and its own intractability.
Still, for a time Netscape was the only browser in town, and its software provided not just a Wweb browser, but a suite of Web-related products: browser, email client, and Usenet news reader. Today, in our age of Gmail and everything-in-the-browser, this approach seems top-heavy, but at the time it was a great boon.
In the long run, though, Netscape's people had something of the last laugh, as a number of them decamped under Netscape's sponsorship to create Firefox.