QLab - QLab, Live show control for Mac OS X.
JN Soundboard - An open-source hotkey soundboard program
Resolume - Resolume is an application for live video performances.
Soundboard Studio - Soundboard Studio lets you take your podcast, live show, gig or performance to the next level.
Smode Studio - Realtime compositing and display for live shows, concerts and events.
Soundplant - Play sound files with the computer keyboard