Rename Visual Studio Window Title extension by Erwin Mayer lets you add solution folder name to Visual Studio title. It can be used to distinguish solutions with the same name in different folders or branches. For example, if you have WpfApplication1.sln in the Code folder and tests for this application in the Test folder, when you open both solutions in Visual Studio they will have exactly same titles:

Looking at Windows taskbar or at window titles you can’t tell where is the code and where are the tests. With the Rename Visual Studio Window Title extension the difference is obvious:

You can configure the extension for your needs and your folder structure from the Tools – Options – Rename VS Window Title section:

Activation threshold is the minimum number of Visual Studio instances running to apply the title rename. Closest and Farthest parent folder depths let you select the part of the folder path to add. Only rewrite title if conflict can auto detect and disambiguate instances with the same title, but it doesn’t work at the moment.

You can download the free Rename Visual Studio Window Title extension for Visual Studio 2010 from Visual Studio Gallery. You can get source code for the extension from Codeplex.