ZynAddSubFX
Mar 28, 2016 - v2.5.4.0Audio/Midi
amsynth
Jun 1, 2017 - v1.7.0.1Audio/Midi
Horgand
Unrated.
Dec 25, 2015 - v1.1.4.2Audio/Midi
LMMS
Apr 12, 2015 - v1.1.3.1Audio/Midi
ASeqView
Jun 4, 2013 - v0.2.8.01Audio/Midi
gmidimonitor
Jun 4, 2013 - v3.6.1.01Audio/Midi
Simple Sysexxer
Jun 4, 2013 - v0.3.0.01Audio/Midi
Non Sequencer
Nov 1, 2013 - v1.9.5.1Audio/Midi
Qsampler
Nov 8, 2016 - v0.4.1.0Audio/Midi
MuseScore
Dec 27, 2015 - v1.3.0.2Audio/Midi