LIVES
www.xs4all.nl/~salsaman/lives/
LiVES began as the Linux Video Editing System. Since it now runs on more operating systems, LiVES is a Video Editing System. It is designed to be simple to use, yet powerful. It is small in size, yet it has many advanced features.
EffectTV
http://effectv.sourceforge.net/
EffecTV is a real-time video effector. You can enjoy movies, TV programs and any other video stream through the many amazing effects.
Cinelerra
http://heroinewarrior.com/cinelerra.php3
Cinelerra takes what normally is a boring web server operating system - studied in computer science classrooms, hidden in back offices - and turns it into a 50,000 watt flamethrower of multimedia editing power.
Kino
http://kino.schirmacher.de/
Kino is a non-linear DV editor for GNU/Linux. It features excellent integration with IEEE-1394 for capture, VTR control, and recording back to the camera. Kino supports a number of formats: Raw DV, DV AVI, still frames, WAV, MP3, Ogg Vorbis, MPEG, DivX.
JAHSHAKA VIDEO EDITOR
http://www.jahshaka.com/
The worlds first OpenSource Realtime Editing and Effects System.
Jahshaka takes advantage of the power of OpenGL and OpenML to give its users exceptional levels of performance. Currently supporting Linux, OsX, Irix and Windows, and Solaris is on the way!