I'm seem to be missing the JSON Encoder and Decoder in my Visual Studio 2013 environment. I have BizTalk 2013 R2 installed in my development VM and the Visual Studio 2013 Premium install as well. A colleague of mine DOES have the JSON Encoder/Decoder. My original install was BizTalk 2013 and then I upgraded to R2 when it was available. My colleague did a fresh install of R2 - these are the only differences I can tell.
Things I have tried:
I've looked for any sort of matching DLL, and the closes one I can find is Microsoft.BizTalk.Components.Utilities.dll. How can I get the JSON Encoder and Decoder toolbox items? It's almost if my install of BizTalk isn't actually 2013 R2 even though Help -> About says it is.
Actually, the solution to this was to do a Repair on my install of BizTalk. Once I did that, I was able to add the two missing Toolbox components. Very weird how they weren't available before.