JSynthLib
Unrated.
Dec 4, 2012 - v0.20.1.2012-11-30Audio
Lingot
Jun 10, 2017 - v0.9.1.4Audio
Linux-MiniDisc
Jun 20, 2018 - v0.9.15.1Audio
LMMS
Apr 12, 2015 - v1.1.3.1Audio/Midi
Luppp
Unrated.
Jun 19, 2017 - v1.0.1.4Audio
MinAmp
Jun 14, 2011 - v0.3.1.0multiple
Mixxx
Dec 27, 2015 - v1.10.1.5Audio
mp3blaster
May 14, 2012 - v3.2.5.1Audio/Player
MusE
Unrated.
Dec 25, 2015 - v2.2.1.3Audio
MuseScore
Dec 27, 2015 - v1.3.0.2Audio/Midi