DafnosMovie 0.1.3 (by Julien Salort)
A basic QuickTime movie player that also shows statistics about the movie files.

Deinterlacer 1.3.1 (by Integrated Knowledge Systems)
Deinterlacer takes an interlaced QuickTime movie and creates a new movie with the odd and even fields in each frame separated into two frames.

3ivx D4 4.5.1 (by 3ivx)
3ivx is an MPEG-4 toolkit that supports MPEG-4 Video, MPEG-4 Audio and the MP4 file format.

QTConvert 1.4 (by Lynn Pye)
Simple app and AppleScript allows users to convert files from one QuickTime recognizable format to another, including from protected AAC to AIFF (for example).

Noise Filter 1.0.1 (by cf/x)
Noise Filter is an iMovie plug-in that takes a page out of elementary noise reduction school.