My partner Pablo Cibraro has developed a version of WS-Compression for WCF (Indigo). Download it from here (it was developed with Febrary CTP).

This is my list of indispensable tools for the development with .NET:

UPDATE: More tools here.

Yesterday accidentally I pressed the combination of keys Ctrl+Tab in Visual Studio 2005, I was surprised with the result. This combination of keys allows to change between documents and windows without using the mouse and help me to work more quick. Try it!.