The Express editions are free versions of Microsoft's powerful Visual Studio IDE. The express editions offer almost the same functionality as the normal Visual Studio editions and are made especially for hobby developers.

An Open Source IDE for .NET programming languages, primarily C#. Nice alternative to the rather expensive Visual Studio Professional, thought not as smooth and feaure-rich as the free Visual Studio Express editions. Can integrate other Open Source tools like NAnt and NUnit.

An Open Source performance profiler for .NET applications. It enables you to see where your programs spends the most time and what the bottlenecks are.

Discontinued documentation generator for .NET 1.1 which generates source code documentation by extracting text from special comments placed within the source code. Similar to Doxygen, but with a more professional look to its output formats. Uses Microsoft's established XML comment format, so it can be used on any well-commented C# project to generate a printable manual or a help file.

Very flexible platform independent build tool for .NET projects. Based on the idea of Java's "ant" tool, you use XML files to describe what happens during the build process of a project. This is the standard solution whenever you require automated builds. Can be extended easily and supports many different compilers and source code management systems.