MakeMKV
MakeMKV is a free multiplatform DVD and Blu-ray to MKV converter and network streamer
Harmonoid
Harmonoid is a free and open source, cross-platform program for playing local and music from YouTube
Reco
Reco is a free and open source simple audio recording application
Rhyme
Rhyme is a free and open source, multiplatform, simple and convenient music player
NTag
NTag is a free and open source, multiplatform audio file tag editor focused on everyday use cases
GabTag
GabTag is a free and open source program for modifying and autocomplete audio file tags
GridPlayer
GridPlayer is a free and open source, cross-platform, simple VLC-based video player that can play multiple videos simultaneously
Soma Radio
Soma Radio is a free and open source simple radio with built-in stations from the website somafm.com
YTMDesktop
YTMDesktop is a free and open source, cross-platform desktop player for YouTube Music
GNOME Music
GNOME Music is a free and open source simple application for playing music