Looking for the right tool for the job at hand is often an arduous process usually involving the comparison of similar tools and cost. It would be nice to have a reference to some of the most widely used tools available and an understanding of what makes the tool beneficial to you.
This is where the "Windows Developer Power Tools" book can help enormously. Created by James Avery and Jim Holmes (both Microsoft MVPs with a wealth of experience), the book introduces you to over 170 tools that are either free to use or published under various open source licenses.
Although the title of the book may suggest that it concentrates on Windows Development, don't be fooled, it contains many tools and components for ASP.NET developers plus tools that will help you document, debug and profile your applications.