WebMatrix is a free Web development tool that installs in minutes and elegantly brings together a Web server, a database, and programming frameworks into a single, integrated experience. WebMatrix lets you code, test, and deploy both ASP.NET and PHP applications side by side. WebMatrix is a brand new web development tool from Microsoft that includes everything you need for website development. Start from open source web applications, built-in web templates or just start writing code yourself. It’s all-inclusive, simple and best of all free.