Totem

VLC media player   (Compare Project)

Mostly written in C

License: gpl, lgpl

Aura Media Player   (Compare Project)

Mostly written in C++

License: Unknown

FFmpeg   (Compare Project)

Mostly written in C

License: lgpl21_or_later

Media Player Classic - Home Cinema   (Compare Project)

Mostly written in C++

License: gpl3_or_later

OpenELEC - Media Center Operating System   (Compare Project)

Mostly written in C

License: gpl

MplayerXP-mplayer with extra performance   (Compare Project)

Mostly written in C

License: Unknown

Kaffeine (KDE)   (Compare Project)

Mostly written in C++

License: gpl

Rockbox   (Compare Project)

Mostly written in C

License: gpl

Jajuk   (Compare Project)

Mostly written in Java

License: gpl

snappy-player   (Compare Project)

License: gpl