[exikyut]

Okay, here's an oddball answer: https://github.com/servo/skia/blob/master/forth/

Skia used to include a really simple Forth implementation written in C++. According to https://groups.google.com/forum/#!topic/skia-discuss/joAyAl1... it was intended for straightforward/simple scripting, and for some reason promptly got deleted shortly after being brought up.

[In case you haven't noticed yet, the official Skia repo is at /google/; I've linked to /servo/'s obviously-old copy above, but there are more than enough forks and clones for the code to be findable elsewhere too.]

I kind of like this implementation because it's both incredibly context-specific and generalized all at the same time, and it isn't Bare Metal Implementation #79,513. And it's C++, too, although this is not (overly) abused.