An anonymous reader writes "Microsoft, inspired perhaps by the ease of selecting and installing iPhone apps, has taken a similar approach to gather back market share of its IIS web server in a predominantly Apache/PHP market. 10 open source CMS, gallery, wiki, and blog tools were chosen to populate the eco-system, dubbed Web App Gallery. Developers must agree to principles and can now submit their PHP or .NET application for inclusion. Once an application is in the gallery, Windows users use Microsoft Web Platform Installer, released in a keynote at MIX this week, which inspects the the local system, and installs and configures dependencies like the IIS webserver, PHP, URL re-writers, and file permissions. Screenshots show this to be quite easy for the typical computer user. This could provide some real competition for WAMP and Linux shell install processes."