Racket
Racket is a general-purpose programming language that offers a rich set of tools for creating and manipulating programs. It is commonly used for teaching programming concepts, implementing domain-specific languages (DSLs), and developing software applications.
Hello, world code example:
(printf "Hello world!\n")
Popularity: Less than 1% of developers are using or have used this language.*
*According to StackOverflow's 2023 survey.
Repositories on GitHub: 19,748