CodeRush Xpress
Mark Miller from DevExpress just announced CodeRush Xpress for C# developers, for free!!! In a partnership with Microsoft, DevExpress is making this tool available for Visual Studio. It’s a selection of CodeRush and Refactor! Pro features.
Refactor! Pro is one of my favorite tools available for Visual Studio. I haven’t really used CodeRush yet, but I will definitely install CodeRush Xpress.