Blend. XNA Game Studio - Download: XNA 4.0 Refresh (Visual Studio 2013) Visual Studio add-ins, extensions and tools. Visual Studio Feeds. Robert Green - Adventures in DeveloperLand. Common Compiler Infrastructure - Metadata - Home. Extensions. Visual Studio. Visual Studio 2013 Preview: CodeLens aka Code Information Indicators - The Ultimate Visual Studio Tips and Tricks Blog. [Updated: 7/12/2013: Thanks to John Gardner for the updated info.]
There is only one way to describe this next feature: IT ROCKS! To use this feature you will need Visual Studio 2013 Preview and Team Foundation Server 2013 Preview as some information comes from TFS.
Web Workbench - Sass, Less and CoffeeScript in Visual Studio.