TFS Workbench 18.104.22.168 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus.
TfsWorkbench.WpfUI.exe is the most frequent filename for this program's installer. This free software is a product of CrispinParker. TFS Workbench is included in Development Tools. The most popular versions among the software users are 2.3, 2.2 and 2.1.
From the developer:
TFS Workbench is a rich desktop UI providing access to your Team Foundation Server Projects. You will need Visual Studio 2012 including Team Explorer to build and edit this project. The program also requires the previous installation of Microsoft .Net Framework version 4.5.
You may want to check out more software, such as Scrum Masters Workbench, TFS or TFS Workflow Control for Team Explorer 2010, which might be similar to TFS Workbench.