If you remember back to 2013 (and before), we released standalone installers for Team Explorer. In VS 2015, we did not release a standalone Team Explorer since customers had free options with Express SKUs and Community, which included Team Explorer functionality.
Customers have continued to request a standalone installer for Team Explorer for non-developers, however. And so today, with the Visual Studio 2017 Update release, the standalone Team Explorer installer is back. This is a free download for non-developers who connect to Team Foundation Server or Visual Studio Team Services. Users of Team Foundation Server will typically need a client access license (CAL), see the licensing white paper for details. Also, see Visual Studio Team Services pricing.
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