Getting Started with ASP.NET Web Matrix ASP.NET Web Matrix is a development tool by Microsoft to create sophisticated web applications. Visual Studio.Net, another development tool, has lots of features such as creating windows applications, web services, and mobile application. But these very features of Visual Studio.Net make it bigger in size. Moreover, installing Visual Studio.Net needs 512MB of RAM. This, in contrast, ASP.NET Web Matrix is meant only to create ASP.NET web applications. Mor.