Some extensions I am/have used with Visual Studio:
- PowerCommands for Visual Studio 2010
- PowerCommands 1.0 is a set of useful extensions for the Visual Studio 2010 IDE.
- Productivity Power Tools – (Microsoft)
- A set of extensions to Visual Studio Professional (and above) which improves developer productivity.
- VSCommands for Visual Studio 2010
- Trial! Some features are not free(?).