Here is the original one that was put together by a fan, but it is not that useful in the current system. It was made when the game was xml based, rather than LUA. It can still create level layouts that can be further hand edited but i suggest people either study the LUA way of doing levels, ot wait untill we release more guidance on this matter :-)
http://www.dyson-game.com/files/DAFT_V0-06.exe(TOTALLY not supported by us)