1. Refactor for ASP.NET
Refactor! is freely available to all ASP.NET 2.0 developers and offers a comprehensive suite of tools that enable you and your team to simplify and shape complex code and HTML markup - making your web applications easier to read and less costly to maintain.
read here.
2. CodeRush Xpress for Visual Studio
CodeRush Xpress is freely available to all Visual Studio 2008 developers and offers a comprehensive suite of tools that enable you and your team to simplify and shape complex code - making it easier to read and less costly to maintain.
read here.
3. Codekeep
Once you've downloaded and installed a CodeKeep add-in, you can manage your code snippets and search for other code snippets without ever having to leave Visual Studio.
read here.
4. Source Code Outliner
The Source Outliner PowerToy is a Visual Studio 2008 extension that provides a tree view of your source code's types and members and lets you quickly navigate to them with filtering inside the editor.
read here.
5. PowerCommands
PowerCommands 1.1 is a set of useful extensions for the Visual Studio 2008 adding additional functionality to various areas of the IDE.
read here.
6. ghostdoc
GhostDoc is a free add-in for Visual Studio that automatically generates XML
documentation comments for C#. Either by using existing documentation inherited
from base classes or implemented interfaces, or by deducing comments from
name and type of e.g. methods, properties or parameters.
read here.
7. smart paster for vs2008
read here.