until is a Forth-like language written in C for extreme portability. Versions of Until run on at least four operating systems, compiled with five different C compilers. Until has about 95% of the functionality of a full Forth system; plus some features available in few if any other Forth's. It was designed from the ground up to be embedded in other programs and used as a 'macro' language. Both calling other C functions and being called by other C functions is extremely easy with Until.
ftp://ftp.taygeta.com/pub/Forth/Compilers/native/misc/until25.txt
