beaTunes is an iTunes companion app capable of automatically analyzing your music collection to help you build better playlists. It analyzes BPM (beats per minute), silence at the beginning or end of a song, and the color (based on frequency spectrum) of a given song. Some of the data is stored through iTunes, and some is stored by beaTunes itself. beaTunes can suggest albums that would complement your music collection, display music charts, and help you find and fix errors in your song meta data, like typos and wrong genres. It also allows you to blog about selected songs or playlists.
MotionView is a Java application that allows you to view, scan, fast-forward, and reverse through the images captured by the Motion motion-detection and video capture software for Video4Linux. It also lets you archive the images to a backup directory, or erase them with a single button click after you view them.