MKVToolNix
MKVToolNix is a free and open source, multi-platform, universal and powerful set of tools for working with MKV format files
Avidemux
Avidemux is a free and open source, multi-platform video editor designed for simple tasks: cutting, filtering and encoding
VideoMorph
VideoMorph is a free and open source, multi-platform program for converting videos to various formats
Ciano
Ciano is a free and open source simple multimedia converter for Linux
Bino
Bino is a free and open source, multiplatform video player with support for a wide variety of stereoscopic video layouts and formats
sView
sView is a free and open source, cross-platform solution to view 3D stereoscopic videos and images
Hypnotix
Hypnotix is a free and open source program for watching live TV streaming, movies and series, as well as listening to radio for Linux
Playary
Playary is a free multi-platform program for watching free movies and listening to free music and podcasts
MystiQ
MystiQ is a free and open source powerful audio and video converter, graphical interface for FFmpeg
Curlew
Curlew is a free and open source easy-to-use audio and video converter for Linux