T3XFORTH is an old-school, plain vanilla FORTH system that is mostly compatible to FORTH-79 with some parts borrowed from FIG FORTH, FORTH-83, and EFORTH, and taking some inspiration from Leo Brodie's (classic, 1983) book, "Starting FORTH".
T3XFORTH runs on 8086 processors under DOS on an IBM PC, or stand-alone using the PC BIOS. It can also run on 32-bit Unix systems using a T3XFORTH VM emulator.
Here is some T3XFORTH code for your amusement.
Here is the glossary with descriptions of all T3XFORTH core and double words.
Finally, here is some stuff to download: