MiniMe is a research project testing some ideas for built-in persistent objects and non-fifo function execution such as co-routines and event-based processing. It has run-time types, object-oriented programming support, and automatic memory management.
Visual Lua is the Integrated Development Environment (IDE) for Lua language. You may use it for debugging the scripts written using wxLua library where the event-handling takes place. It supports multithreaded debugging as well.