Hi everybody!
I've developed a plugin called TFS. It shows a list of Collections and also create a link for each Team Project of desired collection. To use it is simple. Let's imagine for a moment your Collections/Team Projects look like this:
Inside your homepage/page create tag {TFS} to list all collections. Then you create another page called "TFS Projects" and use {TFS:Projects} to list all Team Projects of the collection specified.
Source code here:
It has been tested using TFS 2010. Probably will work on TFS 2013. If you get in trouble try changing the Microsoft.TeamFoundation references to 12.0.0 ort install it by Nuget;