Main Page | See live article | Alphabetical index Marc Andreessen is the chair of Opsware, a software company. He is best known as a cofounder of Netscape Communications Corporation and co-author of Mosaic, an early web browser. External Links mini-bio Longer Bio inteview with the SF Gate This article is a stub. You can help Wikipedia by fixing it. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.