Modern C64 Forth. Includes a vi clone written in Forth, a high-resolution graphics library, plus MML music support.
C64 Programming May the Forth be with you Pt 1 - YouTube
C64 Programming Into the Forth Dimension Pt 2 - YouTube
A Brief Introduction to DurexForth for the Commodore 64
"Just fooling around but Durexforth is fast and fun!" -Kevin Reno
"Ich finde das Forth klein und effektiv, wunderbar." -Peter Bierbach
"Ist eine mächtige Sprache für ein 8-Bitter." -Pebisoft
"The author of durexForth was quite helpful... There is even a vim-like editor, impressive for being on a C64." -Christian Johansson