Native code, 32-bit Forth for Linux or Windows 95/98/NT/2000, with MINOS graphic user interface, and Theseus rapid GUI development editor. GPL, on SourceForge.

Forth Inspired Command Language, ANS Forth interpreter in C. Use: scripting language to embed in other systems as object-oriented command/macro/development prototype language. Descriptions, many documents, downloads. [SourceForge]

Portable, public domain, ANS Forth based on kernel written in ANSI C for portability: for x86 PC, Mac, Amiga; Linux, BeOS; Sun, SGI Indys; Nokia Communicator; 3DO ARM and PowerPC, WebTV, Hitachi SH4, OpenTV prototypes, internal Lucent projects.

Downloads: 3 programs, 1 library.

By Mosaic Industries, Inc.: interactive interpreter, compiler, assembler, debugger speeds programming, testing. Resources callable from Forth/C: automatic system initialization, multitasking executive, heap memory manager, libraries of device drivers ...

Written in Java, full GPL source. Runs in command line or AWT window. Accepts syntax like Forth language and uses reference stack to push and pop all parameters to its functions. Can create Java objects and call methods on them from FIJI stack.

By Delta Research, subroutine threaded Forth for Amiga, originally a commercial product now released as freeware: register and download, technical support, applications, review by Jack Woehr, links.

Object oriented set of extensions to Forth, for experimental music composition and performance. For any Macintosh, and 1 Meg RAM.

Forth compiler for the Microchip PIC 16f87x microcontrollers family.

Forth compiler for the .NET platform. [Open source].