Port80 Software, a Microsoft partner, has released a new survey showing that the Microsoft Internet Information Services 6 Web server has overtaken the Apache open-source Web server among Fortune 1000 Web sites.

In the survey released on Oct. 11, Port80 Software said IIS 6 more than doubled its market share over the last year, to 27 percent. However, IIS 5 remains the most popular Web server among Fortune 1000 users, according to the survey.

The Port80 survey also showed that Microsoft ASP.Net application server environments are used on 48.4 percent of Fortune 1000 sites.

Other platforms, including Java application server environments like IBM's WebSphere, BEA Systems's WebLogic, Sun Microsystems' JSP (JavaServer Pages), the open-source Tomcat platform, and technologies such as PHP and ColdFusion all combined to account for only 21.2 percent of Fortune 1000 site deployments, the survey said.

Port80's most recent and other surveys going back to 2003 can be found here. Also included Netcraft stats for October which take in all world wide stats and not just the Fortune 1000. It shows the same information and if nothing else can be said; It seems now a two server game, Apache or IIS and the others have dropped to barely a blip on the screen.