There are also VS 2012 and VS 2015 versions of this addin in VS Gallery.
Visual Studio 2012 support removed. Can't figure out how to create extension with dual functionality for both VS2012 and VS2013, so information about VS 2012 was removed from manifest. Original version for VS2012 can be foundhere.
Visual Studio 2013 support. Please let me know if it is still functional in VS2012, I have no staging environment to test it. Thank you.
Command added also in Solution explorer context menu
Go offline command for Team Foundation Server and Visual Studio 2013. Version for VS 2012 is also avaliablehere.
You can find new menu item in TEAM menu as "Go Offline", also in context menu of Solution Explorer. When executed, it switches current solution and all projects to Offline mode and you can work without acces to your Team Foundation Server.
Tested only on TFS 2010, but from VS2012.
Based on GoOffline extension with permission of It's author Bernhard Tschirren.