As much as I like new frameworks, I'm going to have go agree. For products more mature things are likely better long term. My experience boost tends to change too many things too rapidly. that leaves TBB and OpenMP. Looking at the other frameworks you mentioned, it seems RaftLib is the closest to Go for C++...although I'd wait awhile before putting it in a production product unless you want to beta test something with customers on the line. For general open source, hacking, and others stuff where your companies dollars aren't directly on the line..why not try out new frameworks?