Visual Assist X
Visual Assist X dramatically reduces application development time with key new features and improvements to existing features in Visual Studio, allowing you to:
* Develop new code faster with fewer errors.
* Quickly understand existing code.
* Refactor existing code making it easier to read and cheaper to maintain.
* Eliminate time spent searching by allowing instant navigation to any file, symbol or reference.
Reference: http://www.wholetomato.com/