Racket (formerly PLT Scheme) is a specific dialect of the Lisp
language based on the Scheme branch of the Lisp family.

It is suitable for implementation tasks ranging from scripting
to application development, including GUIs, web services, etc.
It includes programming environment, a virtual machine with
a just-in-time compiler, tools for creating stand-alone
executables, web server, extensive libraries, documentation
for both beginners and experts, and more. It supports the
creation of new programming languages through a rich, expressive
syntax system.

Homepage:
https://racket-lang.org/
