I'm clear that it's not a free tool stack at present, though I am interested in learning which brand has the most-active community making progress in that area (and which manufacturer scores the highest on the ancillary issues like open specs / documentation / lack-of-NDAs, etc.). In lieu of a free stack, putting more weight behind the best option is one of the only moves you have.

[Same goes for smartcard programming, 802.15.4, V2X networks, and a few other niches, for lack of a better word]