Systems

List of Forth Systems hosted on github, taken from the ForthHub wiki.

AmForth
Assembly
AVR, MSP430
(13 repositories)
zeptoforth
Assembly
ARM
zeptoforth is a Cortex-M Forth, currently targeted at RP2040 and RP2350 boards
pijFORTHos
Assembly
ARM
Bare-metal FORTH operating system for Raspberry Pi
Swapforth
Assembly
J1, FT900, x64
Cross-platform 32-bit ANS Forth
jonesforth
Assembly
x86
ANS FORTH version of jonesforth
STM8EF
Assembly
STM8
eForth with extensions for $0.20 µCs
DCPU
Assembly
DCPU-16
Forth for Notch's DCPU-16
CoreForth
Assembly
ARM
Forth for the Cortex-M3
JonesForth-arm
Assembly
ARM
ARM port of JonesForth
DurexForth
Assembly
6502
Modern C64 Forth
asforth
Assembly
AVR
Subroutine threaded Forth for Atmega328
PETTIL
Assembly
6502
Forth for the Commodore PET 2001
FlashForth
Assembly
PIC, AVR
Forth system for the Microchip PIC 18, 24, 30, 33 and the Atmel Atmega
FastForth
Assembly
MSP430
Forth for all MSP430 FRAM devices, with SD card FAT16/32 and much more
feline
Assembly
x64
64-bit native code Forth 200x
OSX-Forth
Assembly
x86
Forth for OSX
j1eforth
Assembly
J1
eForth for the j1
megaforth
Assembly
68000
Forth designed for the Sega Megadrive
MecrispStellaris
Assembly
ARM Cortex
Mecrisp Stellaris Forth for ARM Cortex Architectures
CF430R
Assembly
MSP430
CamelForth for MSP430
Mecrisp
Assembly
MSP430
Mecrisp Forth for MSP430
hForth
Assembly
8086, Z80, ARM
hForth for i8086, Z80 and ARM
Mecrisp-Quintus
Assembly
RISC-V, MIPS
Mecrisp Quintus Forth for RISC-V RV32IM and PIC32MX (MIPS M4K)
ciforth
Assembly
x86, x64
Compiler factory for 16/32/64 bit msdos/Linux/Windows/OSX/standalone
lina
Assembly
x86
ciforth version for 32 bit Linux
nop
Assembly
x86-64, arm64
Forth dialect for macOS, Linux, *BSD and Windows
ForthModelT
Assembly
PseudoCPU
Forth system targeting a fictional CPU with VM for Windows.
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.
UF
Assembly
UXN
Forth system for the UXN virtual machine
FiveForths
Assembly
RISC-V
Tiny Forth written in hand-coded RISC-V assembly, initially designed to run on 32-bit microcontrollers
lbForth
Forth
x86
Self-hosting metacompiled Forth, bootstrapping from a few lines of C
CamelForth
Forth
6809
Camel99 Forth ITC
Forth
CamelForth
Cross-compiled in Forth ASM & Forth for TMS9900/TI-99
myforth-arduino
Forth
AVR
Simple, non-standard, tethered Forth for the Arduino
SP-Forth
Forth
x86
Forth-94, 32bit, native code, peephole optimization, Windows and Linux hosts, multitasking out of the box. The sources are also available in utf-8.
cmFORTH
Forth
NC4016
Able Forth
Forth
Custom VM
A Forth-like programming language that targets the AbleVM.
FIG-Forth
Forth
6502
sbc09 Forth
Forth
6809
PicForth
Forth
PIC16
Forth cross-compiler for PIC16Fxxx
m3forth
Forth
ARM
Cross-compiler for Cortex-M3
solo-forth
Forth
Z80
Standard-Forth for ZX Spectrum 128 upwards
VolksForth
Forth
6502,68000,CP/M
16-bit
WAForth
WebAssembly
Bootstrapping dynamic Forth Interpreter/Compiler for WebAssembly
Easy Forth
JavaScript
Small ebook for learning Forth
jeforth.3we
JavaScript
jeforth 3 words engine based on project-k
TclForth
Tcl/Tk
Multi-OS Forth using Tcl as its native language
project-k
JavaScript
Forth kernel in JavaScript
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).
jsforth
Javascript
A simple Forth-like language with a web-based REPL
Sonnet
Lua
forth-like language interpreter, written in lua
forthlike
Python
A very simple Forth-like language implemented in Python
webForth
Javascript
eForth
Forth implemented in Forth and JS, runs in browser or Node
#MOBLuSE_FORTH
Scratch 2
Runs in modern browser, Tosh, Scratch 2, or Scratch 3
ChatFORTH
JavaScript
<a href="https://github.com/hcchengithub/jeforth.3we">jeforth.3we</a>
FORTH that chats with OpenAI ChatGPT
pForth
C
Portable Forth
zForth
C
Most
zForth: tiny, embeddable, flexible, compact Forth scripting language for embedded systems
C Forth
C / PlatformIO
Most
Mitch Bradley's C Forth, based on One Laptop Per Child Open FirmWare
gForth
C
Gforth mirror
PlanckForth
C
Bootstrapping an Interpreter from Handwritten 1KB Binary (minimal loadstage 1 with one-letter words followed by a stage 2 bootstrap-include)
reforth
C
Rethinking Forth
rtForth
Rust
Forth implemented in Rust for realtime application
staapl
Racket
PIC18
Racket-based Forth / Macro Assembler on steroids for PIC18F
webForth
C
eForth
Forth implemented in Forth and C runs currently in Arduino or ESP8266
uForth
C
Very portable (embeddable) switch threaded Forth
Creole Forth
Pascal
Scripting language in the form of a Delphi/Lazarus component
dclang
C
Forth-inspired RPN language
c3
C
Varied
A minimal Forth implemented in C, runs on the PC and development boards
c4
C
Varied
c4: a Forth system inspired by Tachyon and ColorForth
eForth
go
Varied
eForth implemented in go, for comparison purposes
toolboxforth
C
uForth/various
Highly portable, modifiable,opinionated Forth(ish) language for PC and MCUs
CL-Forth
Lisp
Any 64-bit
Common Lisp implementation of the Forth 2012 Standard