Notes
1. Apache, an open source Web server, is by far the leading Web server in use, with a market share that is double of all the other technologies combined. See Netcraft, Web Server, available from http://news.netcraft.com/
2. As of November 2006, 74.9% of Internet users were using Windows XP, 3.5% were using Linux on their desktop, and 3.6% were using MacOS. Combined, Mac and Linux are used by about 70 million people. See Browser OS Survey, available from http://www.w3schools.com/browsers/browsers_os.asp
3. Firefox is a descendant of Netscape's Navigator. Recent statistics show that about 60% of users used Microsoft's Internet Explorer, while about 30% were using Mozilla's Firefox. See Browser Statistics Survey, available from http://www.w3schools.com/browsers/browsers_stats.asp
4. Sourceforge.Net Software available from http://sourceforge.net/softwaremap/