Open source software packages such as Open Source Film Editing Software, is computer software that is licensed under an open source license. This means that the person who created the software makes the source code for licensing of the product open for all to modify and redistribute. It really just means that most of this software is absolutely free and anyone can download it for their own personal use. There are many Open Source Movie Editing Software including Avidemux, AviSynth, Cinelerra, DScaler, DVDx, GNU VCDImager, Jahshaka, Kaltura, Kino, Kdenlive, LiVES, Mpeg2Schnitt, VirtualDub, VirtualDubMod. These are just the main ones but there are other software applications as well.