REBOL

~400 words lastmod

A context-oriented programming language, useful for parsing text and displaying GUIs.

REBOL Language

REBOL forks, reimplementations, and derivations

Rebol3

a fork of Carl Sassenrath’s original source release of REBOL 3 alpha

GitHub - Oldes/Rebol3: Source code for the Rebol [R3] interpreter

Installation and help

Fetch the latest release, copy to ~/.local/bin/rebol3

On macOS, the download needs to be marked safe from quarantine

    xattr -d -r com.apple.quarantine ~/.local/bin/rebol3

Launch the REPL with rebol3. Documentation is mainly the help system.

See what modules are available:

    help system/modules

Precompiled builds of Rebol3

Base
minimal additions (not much useful)
Core:
includes a little bit more stuff than the Base
Bulk
includes almost everything

Arturo

Programming language implemented in Nim, borrowing from many other languages including REBOL.

Notable Arturo projects

Graphito
portable, serverless & lightweight SQLite-based Graph Database

Boron

Scripting language “similar to” REBOL, written in C

Boron Scripting Language

Red

GitHub - red/red: Red is a next-generation programming language strongly inspired by Rebol, but with a broader field of usage thanks to its native-code compiler, from system programming to high-level scripting and cross-platform reactive GUI, while providing modern support for concurrency, all in a zero-install, zero-config, single ~1MB file!

Red.js

web runtime for Red written in Haxe

GitHub - ALANVF/Red.js: A web runtime for the Red programming language

Ren-C

Deeply redesigned LGPL-3 derivative of REBOL 3. Provides a a user-friendly API for C and JavaScript.

GitHub - metaeducation/ren-c: Library for embedding a Rebol interpreter into C codebases

Source checkout needs a bootstrap build

    wget https://s3.amazonaws.com/r3bootstraps/r3-osx-x64-8994d23-debug
export R3_MAKE="$(pwd)/prebuilt/r3-osx-x64-8994d23-debug"

Rye

Homoiconic (no keywords) programming language based on ideas from Rebol and implemented in Go.

Rye Language

GitHub - refaktor/rye: a language trying to be flexible about expression, but strict about state