[stack] Canonical LLVM starter language is concatenative...

http://llvm.org/releases/1.1/docs/Stacker.html

I just found this... As of 1.1, LLVM includes as one of its primary
examples a "Forth-like" language that might possibly serve as the
foundation for a more complete concatenative language. It's very
Forthlike, I'd say.

Just in case anyone wants to start a new project :-).

Personally, I'm a little busy learning the J language, which isn't
concatentive but is from a remarkably different genre of languages
than the conventional ones. I'm starting this now because I just found
that JSoftware released it completely as free software (licensed under
GPL 3), so at last I can learn a complete APL and know that I'll be
able to use it effectively in my job if I want. (As a side note,
someone also recently released an open source reimplementation of the
related "K" language, named "Kona"; I'd start with that, but it's
currently much less complete.)

-Wm