Originally started as a Forth implementation for Intel microprocessors, It now comprises ISO-Forths in fig-Forth tradition (one assembler source file) for quite some targets. Targets are 16, 32 and 64 bit Intel on MS-DOS, MS-windows and Linux, and as ...

Very efficient Forth compiler, source code loosely based on Bill Muench's bForth. For Linux, Windows NT. Generated with the META program, a free metacompiler written in Forth. Free with iForth.

Very simple object oriented Forth implementation, by Helge Horch.

Runs on Linux OS, similar to eForth. Goals: simple, easy to understand first, speed and elegance later; able to call functions (procedures) in dynamic linked library (.so files). Download, development forum.

Standalone Forth (neither ANS compliant nor ColorForth) for PC.

By DELOSOFT.COM. Supports: all Win32 (CE/9x/ME/NT/2000, CE emulators), Intel/MIPS/SH3/StrongARM CPUs. ANS'94 compliant, current language standard. Multithreaded core. Compatible with SP-Forth/3.x and libraries. Self-hosted development: compiler and co...

By FORTH, Inc. Integrated cross-development environment for embedded systems. Runs on Windows, supports many target CPUs, custom versions available often in days.

Begun as Andy Valencia eForth x86 port, 32-bit mode, was runnable under DOS DJGPP 32-bit extender; stalled for years then resumed to adapt to GRand Unified Bootloader (GRUB), environment was improved to give ForthOS. Description, download, links.

By HARDCODE Development; portable Forth development system for Motorola 680x0, supports ANSI; includes source, documentation, tools; free download.

Programmable Brick Forth, by Hempel Design Group; replacement firmware for Lego Mindstorms: FAQ, mail list, GUI interface, and tutorial in pdf format.