Accessible from anywhere through the Microsoft Web Platform site, the Windows Web App Gallery provides a streamlined way for users to explore, discover, and install Microsoft® ASP.NET, PHP, and other types of Web applications for the Windows operating system, providing Web developers with access to millions of Web users worldwide. Web PI also provides an interface to the Windows Web App Gallery, a community-driven hub of the most popular open-source and community Web applications that run on Windows.

The currently available software components include Microsoft WebMatrix, Internet Information Services (IIS), the latest versions of PHP 5.2 and PHP 5.3, Microsoft® SQL Server® 2008 R2 Express, the Microsoft®.NET Framework, and Microsoft® Visual Web Developer 2010 Express Edition with Service Pack 1. You can use Web PI to learn more about different components and install one or more components in a chained installation, with Web PI handling reboots and logging failures where applicable. Web PI does the work of comparing the newest available components across the Microsoft Web Platform against what is already installed on your computer you can see what is new and what you haven't yet installed.

The Microsoft® Web Platform Installer (Web PI) makes it easy for you to download, install, and keep up to date on the latest software components of the Microsoft® Web Platform for development and application hosting on the Windows® operating system.

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