Theater show control
- QLab - Live show control. (Mac OSX, $)
- MultiPlay - is a Windows based program designed to play audio cues for theatre or corporate use. It is free to use in both amateur and commercial environments. (Windows, free)
Church presentation
Quick reference for your smartphone
- AV Tools - Android
Video Editing
- Cinelerra - Quite possibly the most powerful video editing software out there. Free. Linux based only.