Awesome
libui-lua
Simple Lua binding to libui library.
Compatable with Lua >= 5.1
Depends on changes to libui library that are not in the upstream repository. You should therefore you should use libui from https://github.com/mdombroski/libui.
This unfortunately excludes mac compatability. I don't own a mac, don't intend to, and I don't know objective-C.
Screenshots