Lua also powers itch.io! [0] Leafo, the creator, has also built Moonscript [1], a language that compiles to lua, and Lapis [2], a web-framework for Lua and Moonscript. I am always fascinated by his productivity.

[0] https://leafo.itch.io/ [1] https://moonscript.org/ [2] https://leafo.net/lapis/