FreeFrame is the open-source cross-platform real-time video effects plugin system for VJ softwares. FreeFrame is now well supported by most major VJ titles. More information on the home page: http://freeframe.sourceforge.net
GImageView is a GTK+ based image viewer which supports tabbed browsing, thumbnail table views, directory tree views and drag and drop. It also support movies using the Xine library and MPlayer, and supports images in compressed archive formats.
EffecTV is a real-time video effector. You can enjoy movies, TV programs and any other video stream through the many amazing effects.