I have started using Visual Studio Team System (VSTS) 2008, recently. Previously I worked with Visual Studio 2005. As a matter of fact I had to use lots of external tools to perform and speedup my development process. However, while working with VSTS 2008, it's very exciting for me that, I found replacements for most of the external tools there.
Here are 10 tools which I left after using VSTS 2008.