LUIGI
Lovely User Interfaces for Game Inventors
LÖVE backend
LUIGI is compatible with LÖVE versions 0.9.2 through 11.1.
SDL backend
LUIGI can also run under LuaJIT when SDL 2, SDL_image and SDL_ttf (and their dependencies) are installed.
API docs
View the generated API docs. Probably not up to date.
FAQ
Check the issue tracker for tickets with the FAQ label.