Miscellaneous esoteric programming languages.

Pip: an imperative code-golf language

Making a programming language using python!

The Omicron Programming Language

The unnecessary Assembly-like programming language

Atom programming language high fidelity prototype

Novelty programming language that operates as a stack-based reduced instruction set language.

A small interpreted language for working with stacks

PDL is a new library language for storing data and variables pdlparse parses them in python