From XPUB & Lens-Based wiki
Website http://kdenlive.org
License GPL
OS GNU/Linux, FreeBSD, OS OS X
Media Video
Format XML
Interface GUI,
Wikipedia http://en.wikipedia.org/wiki/Kdenlive

Kdenlive is based on the MLT framework and closely connected to the capacities of this library. See also: melt, a command-line interface to the same library.