Open Source Forth Software

Mecrisp - A family of optimising native code Forth implementations for MSP430, ARM Cortex M, RISC-V RV32IM(C), MIPS M4K and FPGAs.

The Portable Forth Environment implements the ANSI Forth Standard, it is fully written in C, the newer version has a module concept, and it is fully multithreaded. Autoconf used. Tested in embedded environments.

Thinking Forth captures the philosophy of the language to show users how to write more readable, better maintainable applications. This project makes the book available in electronic form (LaTeX and PDF).

Mops is a full-featured, object-oriented stand-alone programming language for Mac OS X. Its interactive development environment provides for fluid and productive programming by allowing quick testing and modification of small code segments.

4tH is a Forth compiler with a little difference. Instead of the standard Forth engine it features a conventional compiler. 4tH is a very small compiler that can create bytecode, C-embeddable bytecode, standalone executables, but also works fine as a scripting language. It supports about 95% of the ANS Forth CORE wordset and features conditional compilation, pipes, files, assertions, forward declarations, enumerations, structures, suspended execution, recursion, include files, etc. It comes with an RPN calculator, BASIC interpreter, line editor, preprocessor, compiler, decompiler, C-source generator, a virtual machine, and a multitasking environment.

ANS Forth for Win32 and Linux/x86 (used to compile the following SF projects: acWEB, acFTP, acFreeProxy, acSMTP, Forth-Script)

Win32Forth is ANS compatible, Forth language application development system with many tools; Interactive console, integrated extensible debugger, a GUI file editor, hypertext rendering, hyperlinked source files. VIEW <word-name> to explore the many files

FlashForth is a standalone Forth system for the Microchip PIC 18, 24, 30, 33 and the Atmel Atmega series of microcontrollers. A Forth system with interpreter, compiler, assembler and multitasker is provided.

Snd is a sound editor.

amforth is an extendable command interpreter running on AVR ATmega and TI MSP430 microcontrollers. The Risc-V and ARM architectures are ascending. Turnkey actions for IoT workloads are possible as well. The command language is close to the Forth 2012 standard.

colorForth is, in Chuck Moore's own words: "A dialect of Forth that uses color to replace punctuation. Includes its own operating system. Produces extremely compact programs. Instant compile from pre-parsed source."

VolksForth is a 16bit Forth System with the goal to produce a manageable Forthsystem for computer systems with restricted system resources.

Tachyon was originally developed for the Parallax Propeller 8-core MCU because I need to do more and faster, and within the the limited memory, in order to produce firmware for my commercial embedded hardware products. When the much vaunted successor, the P2 was introduced, then Tachyon was upgraded and also built into the P2 ROM as TAQOZ. Source code can be sent or pasted from the PC terminal at high speed (921,600 default) without any terminal delays and compiled into RAM ready for backup into SD or Flash. TAQOZ RELOADED, the full version of Tachyon for the P2 can be booted from SD cards or Flash and has all the tools needed to develop and test code interactively on the target MCU. Please browse the wiki pages for howtos and information on all matters regarding Tachyon/TAQOZ and the P1 and P2. There's even a Tachyon layer that runs on Mecrisp on the RP2040 too and now the ESP32-C3 as TachyonESP which uses the Arduino IDE to build the kernel.

Unofficial user documentation for the Mecrisp-Stellaris Forth programming language on ARM Cortex-M microprocessors. Includes a index, search function, projects, pictures and Youtube video links. This Documentation is designed for Forth Beginners.

A Perl based interpreter for a language which is a blend of Forth and APL. The power of lang5 stems from its arrays operations in conjunction with the underlying Forth programming paradigm of bottom up programming.

DruidBSD is a FreeBSD micro-distribution that supports CD/DVD, USB, and HD booting into a Live BSD Distribution.

bigFORTH is a native code Forth for x86 processors. MINOS is a portable GUI library for X11 and Win32, written in object oriented Forth, and includes the form editor Theseus.

acFTP is an OpenSource replacement for Microsoft FTP server and other proprietary FTP servers for Windows. Unlike MS FTP, acFTP supports extended FTP commands set, including APPE and REST for resuming broken uploads and downloads.

A virtual machine providing a dynamic, portable assembler; JIT compilation; C bindings; and Forth semantics.

Ficl is a lightweight, embeddable scripting language designed to be incorporated into other programs, and especially embedded systems that may have memory and OS constraints. Applications include scripting, hardware bring-up, rapid prototyping, and system extensions. Unlike Lua or Python, Ficl acts as a component of your system - you feed it stuff to do, it does the stuff, and comes back to you for more. You can export compiled code to Ficl, execute Ficl code from your compiled code, or interact. Your choice.

Libraries and frameworks for efficient and scalable concurrency in Forth.

THE SOURCES HAS BEEN MOVED TO GITHUB https://github.com/josefpavlik/picoforth PicoForth is Forth compiler for PIC12 and PIC16 families. It is written in gForth and requires gpUtils. Produces hex file ready to be programmed into the device.

Forth Script is a server-side web scripting engine based on FORTH language. It may work as CGI-application under any web-server and lets you create dynamic web-pages using Forth language, HTML patterns and database's data. Example: http://www.delosoft.com

This is fast 32bit FORTH system for PalmOS 2.x/6.x having the following features: Programming directly on PalmOS device, Full ANS 94 compatibility, Fast 32bit and 64bit arithmetic, Multitasking kernel, Supporting PalmOS from 2.0 to 6.0

The OS561 operating system based around FORTH/Java. The OS is to run on a VHDL chip OpenHardware design called the Minon, but could become available for other platforms. The unique point of the design is a revolutionary data compression technology.