stack-based topic
clac
Command-line, stack-based calculator with postfix notation
Clojush
The Push programming language and the PushGP genetic programming system implemented in Clojure.
Elymas
A programming language I can like. Unholy and full of magic.
MATL
A programming language based on MATLAB and suitable for code golfing
05AB1E
A concise stack-based golfing language
Vyxal
A code-golfing language experience that has aspects of traditional programming languages - terse, elegant, readable.
distaff
Zero-knowledge virtual machine written in Rust
arturo
Simple, expressive & portable programming language for efficient scripting