JForth is freeware since 1998. I don't know if homepage of JF still available ATM, but if you want, I can send you this archive.

BTW, I tried to use JF on MOS 1.4x and I found it unusable. Not tested on MOS 2.x.

Also, I have gforth-0.6.0 (or 0.8.0?) compiled for me by Jorge Areceda.

[ Edited by mobydick 21.10.2011 - 19:13 ]