Forth Systems - ForthHub/wiki GitHub Wiki

Work in progress; see https://github.com/ForthHub/discussion/issues/19.

Forths in Assembly

:star: Name / Link Lang CPU Description
1.4K jonesforth Assembly x86 Mirror of original(?) jonesforth
323 STM8EF Assembly STM8 eForth with extensions for $0.20 ยตCs
307 zeptoforth Assembly ARM zeptoforth is a Cortex-M Forth, currently targeted at RP2040 and RP2350 boards
297 Swapforth Assembly J1, FT900, x64 Cross-platform 32-bit ANS Forth
258 pijFORTHos Assembly ARM Bare-metal FORTH operating system for Raspberry Pi
252 DurexForth Assembly 6502 Modern C64 Forth
112 FlashForth Assembly PIC, AVR Forth system for the Microchip PIC 18, 24, 30, 33 and the Atmel Atmega
89 JonesForth-arm Assembly ARM ARM port of JonesForth
89 FiveForths Assembly RISC-V Tiny Forth written in hand-coded RISC-V assembly, initially designed to run on 32-bit microcontrollers
85 CoreForth Assembly ARM Forth for the Cortex-M3
79 ciforth Assembly x86, x64 Compiler factory for 16/32/64 bit msdos/Linux/Windows/OSX/standalone
79 lina Assembly x86 ciforth version for 32 bit Linux
73 AmForth Assembly AVR, MSP430 (13 repositories)
59 FreeForth2 Assembly x86 Linux FreeForth2 offers a novel, lightweight Forth for x86 Linux that deftly blends assembly and Forth
59 feline Assembly x64 64-bit native code Forth 200x
51 Mecrisp Assembly MSP430 Mecrisp Forth for MSP430
45 Taliforth2 Assembly 65C02 STC ANS Forth for 65C02 platforms
44 jonesforthโŒ Assembly x86 ANS FORTH version of jonesforth
44 nop Assembly x86-64, arm64 Forth dialect for macOS, Linux, *BSD and Windows
42 OSX-Forth Assembly x86 Forth for OSX
38 j1eforth Assembly J1 eForth for the j1
36 Forth500 Assembly SC62015 Standard 2012 Forth for the Sharp PC-E500
36 PETTIL Assembly 6502 Forth for the Commodore PET 2001
35 hForth Assembly 8086, Z80, ARM hForth for i8086, Z80 and ARM
31 Forth850 Assembly Z80 Standard 2012 Forth for the Sharp PC-G850
28 DCPU Assembly DCPU-16 Forth for Notch's DCPU-16
22 Z79Forth Assembly HD6309E A complete platform (HW and SW) supporting a 79-STANDARD subset, FORTH-83 and ANS extensions. An alternate EEPROM image provides full support for the ANS94 Core word set.
13 asforthโŒ Assembly AVR Subroutine threaded Forth for Atmega328
11 megaforth Assembly 68000 Forth designed for the Sega Megadrive
8 FastForthโŒ Assembly MSP430 Forth for all MSP430 FRAM devices, with SD card FAT16/32 and much more
7 ForthModelT Assembly PseudoCPU Forth system targeting a fictional CPU with VM for Windows.
2 MecrispStellaris Assembly ARM Cortex Mecrisp Stellaris Forth for ARM Cortex Architectures
1 CF430RโŒ Assembly MSP430 CamelForth for MSP430
- Mecrisp-Quintus Assembly RISC-V, MIPS Mecrisp Quintus Forth for RISC-V RV32IM and PIC32MX (MIPS M4K)
- UF Assembly UXN Forth system for the UXN virtual machine

Forths in Forth

:star: Name / Link Lang CPU Description
262 lbForth Forth x86 Self-hosting metacompiled Forth, bootstrapping from a few lines of C
32 CamelForth Forth 6809
33 Camel99 Forth ITC Forth CamelForth Cross-compiled in Forth ASM & Forth for TMS9900/TI-99
35 myforth-arduino Forth AVR Simple, non-standard, tethered Forth for the Arduino
60 SP-Forth (Version 4, spf4) Forth x86 Forth-94, 32bit, native code, peephole optimization, Windows and Linux hosts, SEH and SIGSEGV handling, multitasking out of the box. Sources are also available in utf-8.
25 cmFORTH Forth NC4016
20 Able Forth Forth Custom VM A Forth-like programming language that targets the AbleVM.
18 FIG-Forth Forth 6502
15 sbc09 Forth Forth 6809
13 PicForth Forth PIC16 Forth cross-compiler for PIC16Fxxx
12 m3forth Forth ARM Cross-compiler for Cortex-M3
8 solo-forth Forth Z80 Standard-Forth for ZX Spectrum 128 upwards
28 VolksForth Forth 6502,68000,CP/M 16-bit

Forths in JavaScript and other scripted languages

:star: Name / Link Lang CPU Description
200 WAForth WebAssembly Bootstrapping dynamic Forth Interpreter/Compiler for WebAssembly
61 Easy Forth JavaScript Small ebook for learning Forth. NB: some bugs were fixed in the fork.
42 jeforth.3we JavaScript jeforth 3 words engine based on project-k
30 TclForth Tcl/Tk Multi-OS Forth using Tcl as its native language
20 project-k JavaScript Forth kernel in JavaScript
16 yoda Bash An experimental implementation that is close to Forth-2012 (see missing). It produces subroutine-threaded code of the underlying machine (i.e. Bash).
15 jsforth Javascript A simple Forth-like language with a web-based REPL
3 Sonnet Lua forth-like language interpreter, written in lua
3 forthlike Python A very simple Forth-like language implemented in Python
8 webForth Javascript eForth Forth implemented in Forth and JS, runs in browser or Node
4 #MOBLuSE_FORTH Scratch 2 Runs in modern browser, Tosh, Scratch 2, or Scratch 3
0 ChatFORTH JavaScript jeforth.3we FORTH that chats with OpenAI ChatGPT

Forths in Other Languages

Stars updated at 2021-07-04

:star: Name / Link Lang CPU Description
369 pForth C Portable Forth
265 zForth C Most zForth: tiny, embeddable, flexible, compact Forth scripting language for embedded systems
153 C Forth C / PlatformIO Most Mitch Bradley's C Forth, based on One Laptop Per Child Open FirmWare
108 Micro eForth C Most Brad Nelson's Micro eForth - runs on micro-controllers, Posix, Windows and web
95 gForth C Gforth mirror
59 PlanckForth C Bootstrapping an Interpreter from Handwritten 1KB Binary (minimal loadstage 1 with one-letter words followed by a stage 2 bootstrap-include)
58 reforth C Rethinking Forth
48 rtForth Rust Forth implemented in Rust for realtime application
31 staapl Racket PIC18 Racket-based Forth / Macro Assembler on steroids for PIC18F
16 webForth C eForth Forth implemented in Forth and C runs currently in Arduino or ESP8266
13 uForth C Very portable (embeddable) switch threaded Forth
12 Creole Forth Pascal Scripting language in the form of a Delphi/Lazarus component
9 dclang C Forth-inspired RPN language
16 c3 C Varied A minimal Forth implemented in C, runs on the PC and development boards
9 c4 C Varied c4: a Forth system inspired by Tachyon and ColorForth
3 c4a C Varied c4a: Arduino version of c4 - also runs on PC
1 eForth go Varied eForth implemented in go, for comparison purposes
3 toolboxforth C uForth/various Highly portable, modifiable,opinionated Forth(ish) language for PC and MCUs
29 CL-Forth Lisp Any 64-bit Common Lisp implementation of the Forth 2012 Standard
1 ok C STM32 Secure thin-client Forth for MCU systems development