According to Netcraft’s most recent surveys, since the launch of Windows 2000 the number of sites deploying it has tripled from 20,000 to more than 65,000..
According to research firm Netcraft, 29 percent of all public Web servers run on Linux, making Linux the most popular operating system for public Web sites.
[Netcraft] reports that Apache Web Servers constitute over 60 percent of the commercial web servers in operation on the Internet..