on the fly compression

Compression and extraction tool.

Fly through a strange latticework in this screensaver.

Fly over your music with Soundscape, a visualization plugin for iTunes.

Easily compress PDF files on Mac with 4 different compression modes.

Image file compression.

Mac edition of established compression utility.

Audio compression toolkit.

Extract various compression archives.

Simple-to-use PDF compression tool.

Extensive video-compression toolkit.