I've been wanting for a while a lightweight Electron alternative that doesn't use web views, just native APIs, and uses Lua instead. So it would be an .exe file that looks for a main.lua somewhere, and runs it, giving access to modules that wrap the Win32 API in high-level functionality. Then you could run a command that combines the .exe and the main.lua into a new .exe file that you can distribute. It would be super lightweight and wouldn't even need a compiler to be installed to be able to make tiny lightweight apps.