Quartus Forth gives you a full-featured Forth development environment in the palm of your hand. Quartus Forth is written in hand-coded assembler for optimal performance.
http://www.quartus.net/products/forth/
Version 2.0 is now available with increased codespace, increased compilation speed, an ARM assembler, new language extensions, full error text for all PalmOS system error codes, and a built-in dictionary extension with 6200+ PalmOS API constants and named structure offsets.
See also the Quartus wiki for a lot of QuartusForth code and PalmOS knowledge. http://www.quartus.net/wiki
