Great news. Microsoft acquired TeamPlain, which makes the popular TeamPlain Web Access for Team Foundation Server.
TeamPlain is a web front end for VSTS that enables users to access the majority of TFS functionality from within a Web browser. The focus of TeamPlain is on work item tracking but it also includes some valuable version control capabilities (like viewing history/change sets, diffing files, browsing the source base, etc.), some SharePoint integration, Reporting services integration, and some upcoming build support.
I installed TeamPlain on my TFS and have to say that I'm impressed. The installation process was easy and it works like a charm.
A screenshot of the product:
