Rebol3
Rebol
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Rebol3
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I Can Read C++ and Java But I Can’t Read Smalltalk (2000) [pdf]
There’s a few more living derivatives of the OG Rebol; the second of these also has a list of other derivatives and relatives:
https://github.com/metaeducation/ren-c
https://github.com/Oldes/Rebol3
Rebol
What are some alternatives?
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!
pocketlang - A lightweight, fast embeddable scripting language.
ren-c - Library for embedding a Rebol interpreter into C codebases
potion - _why the lucky stiff's little language (the official repo... until _why returns)
pharo - Pharo is a dynamic reflective pure object-oriented language supporting live programming inspired by Smalltalk.
gravity - Gravity Programming Language
pharo - The Sources for Pharo
Wren - The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.
lispBM - An interpreter for a concurrent lisp-like language with message-passing and pattern-matching implemented in C.
moonscript - :crescent_moon: A language that compiles to Lua
julia - The Julia Programming Language
Fennel - Lua Lisp Language