stack-based topic

Kempe is a compiled stack-based language

vmchale

Custom implementation of the Arma script language SQF

SQFvm

GolfScript/CJam-inspired stack-based programming language that can be golfed or written literately*

betaveros

Interpreted language and bytecode VM of my own design written in Rust [Unmaintained]

epellis

dclang, an RPN language descending from dc and forth.

akjmicro

Stax Golfing Language

tomtheisen

stck is a stack-based programming language

teodoran

A stack-based esolang with condensability as well as simplicity and readability in mind.

lyxal

cod programming language

justlucdewit

A feature-rich, two-dimensional, recreational programming language. With mirrors.

m-ender