Display current Git branch in Visual Studio?

ShowMyGitBranch is a lightweight and straightforward solution for this. No configuration is required.

By the time I developed this extension I did not know VSCommands had a solution for this, so I did it with this very simple goal in mind.

Install the Rename Visual Studio Window extension.

Go to Tools → Options → Rename VS Window Title → Global rules, under Patterns → Solution in xxx mode, and add [gitBranchName] to the path.

Example: [parentPath]\[gitBranchName]

Update: They've changed the title of the extension to Customize Visual Studio Window Title

The Git Source Control Provider displays the branch name in the Pending Changes tool window.

The VSCommands extension adds the branch name to the Visual Studio 2013 title.