TFS Team Project Manager

https://teamprojectmanager.codeplex.com/
Automates various tasks across Team Projects in Team Foundation Server. If you find yourself managing multiple Team Projects for an organization and have recurring tasks and questions that repeat themselves over and over again, Team Project Manager probably has some answers for you.

TFS Event Manager

https://tfseventmanager.codeplex.com/
Allows you to manage Team Foundation Server event subscriptions as well as help troubleshoot event job processing.

If you’ve read Grant’s blog you’ll know why this is convenient.

TFS Workspaces Cleaner

https://tfsworkspacescleaner.codeplex.com/
Deletes Team Foundation Server workspaces that have not been accessed in a number of days, along with their files locally on disk.

This is especially useful on build servers, where build definitions that have not run in a while can take up large amounts of disk space (which is not even cleaned up by build retention policies). Since it is a command-line tool, this cleanup can easily be automated as a Windows Scheduled Task.

TFS Storage Explorer

https://tfsstorageexplorer.codeplex.com/
Allows browsing the Team Foundation Server (non-version control) storage for TFS 2013 or above.

In case you’re wondering (like me) where the default build process templates are now being stored and what else is stored outside of version control.