Fennel is a lisp that compiles to Lua. It aims to be easy to use,
expressive, and has almost zero overhead compared to handwritten Lua.
Full Lua compatibility - You can use any function or library from Lua.
Zero overhead - Compiled code should be just as or more efficient
than hand-written Lua.
Compile-time macros - Ship compiled code with no runtime dependency
Embeddable - Fennel is a one-file library as well as an executable.
Embed it in other programs to support runtime extensibility and
At https://fennel-lang.org there's a live in-browser REPL you can use
without installing anything.