Great free addIn for Visual Studio 2005

Smart Paster
The most practical addin: enabled multiple line pasting of string into Visual Studio from other applications. I use smart paster to paste SQL strings without headaches!
You can paste text as comment, string, stringbuilder or region. To be used with the right mouse button.

Cool command
Interresting contextual menu addin for project: collapse all, open container folder, reference manager

Dev Express SQL prompt
Enable intellisense style edition in SQL Query Analyzer and SQL Server Management Studio.
You just have to register to use it freely.

CokeKeep
Code snippet storing and sharing website. Can be used with a Visual Studio addin


REFERENCES
Ten tools for VS 2005

Listing of 10 smart plug-ins.

Visual studio Hacks
By the author of the book "Visual Studio Hacks"