VFXForth

From Rosetta Code
VFXForth is an implementation of Forth. Other implementations of Forth.
VFXForth is an example of a compiler. You may find the programming tasks that have been solved using it here.

VFX Forth features a kernel written to the ANS Forth standard. VFX Forth includes the VFX optimising code generator which produces the fastest, tightest Forth code available.