From Vanilla Internet:
Chameleon is a versatile, easy-to-use lighting control application for Mac OSX. It has been designed to reflect the interface of a physical lighting desk used by professionals. If you're used to working with these lighting desks, you'll be immediately at home with Chameleon; if you're new to lighting control, Chameleon is a great place to learn. Chameleon is used worldwide by amateurs and professionals alike, including stage lighting technicians, churches, schools, DJs and architectural lighting specialists. The download is fully functional but you'll need a licence to output DMX. One day trial licences are available on request. Compatible with the Enttec Pro USB-DMX and interfaces that use the Enttec Pro protocol.