LFE
LFE (Lisp Flavored Erlang) is a functional programming language that combines the syntax and semantics of Lisp with the concurrent, fault-tolerant nature of Erlang. It is primarily used for writing highly distributed and fault-tolerant systems, such as telecommunication infrastructure, real-time systems, and distributed computing.
Hello, world code example:
(: io format '"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: 65