esooLike the Programming Languages Zoo but with esoteric languages.
BrainfuckA flexible Brainfuck / Brainloller / Braincopter interpreter in Swift 3.1.
flip-jumpThe simplest programming language - Flip a bit, then Jump
HeadacheProgramming Language that compiles to 8 Bit Brainfuck
qselQuantum programming language putting entanglement and superposition front and center
pikt🎨 Image-based poetic programming language.
longA simple, elegant, and useless esoteric programming language written in typescript
VyxalA golfing language that has aspects of traditional programming languages - terse, elegant, readable.
ThueCat's Eye Technologies' distribution of John Colagioia's Thue programming language