There are 2 repositories under language-specification topic.
The toolkit for extracting Power Query documentation from #shared and publishing it to GitBook
Specification and recommendations for the Key Value Access Language (KVAL)
Chlore is a stack-oriented programming language made with a focus on simplicity
It is a compiler of our custom language LangX which is inspired from Python and C++.
General specification for the L language, leveraging LEGO CAD programs (like stud.io) as a programming language.
LangX. It is our custom language inspired from Python and C++.
Informal Specification of the Uncommon Language Framework (ULF)
An in-progress SQL parser written in Rust and uses Chumsky for parsing for educational purpose.
The official specification for the Hussar language
Cosas de CI3725 en Septiembre-Diciembre 2014
The Cobalt language specification.
Client Facing File Parsing and Writing Domain Specific Language