[frompdx]

Hard for me to pick a favorite.

Lisps:

Clojure(Script) - Very productive language with a great ecosystem of libraries available. My favorite libraries are re-frame and cljfx.

Janet - Borrows from Clojure in terms of syntax. Super small package (1mb). Produces small, statically linked binaries. The ecosystem is in its infancy but I see it as having a lot of potential.

Games:

GDScript (for Godot) - A lot of people agonize over using C#, Rust, C++, when writing for Godot. I find GDScript to be very intuitive and productive though.

Embedded/Micro Controllers:

Forth - Makes an appearance on HN pretty regularly. I describe it as a backwards Lisp without parens. Being able to develop interactively on something like an Arduino Uno using FlashForth is lots of fun.