There are 2 repositories under langdev topic.
McCarthy's Lisp in Python with macros. A celebration of 50+ years of symbolic processing.
An embedded Insane-specific Language for Scala implementing the BASIC programming language
Simple general purpose programming language, compiler and virtual machine meant for embedding in .NET applications.
Code conversations in Clojure regarding the application of pure reasoning algorithms.
The Topaz programming language.
Programming language and compiler project.
Expression-oriented functional programming language
A safe and leak-free interner for data of mixed and arbitrary type