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QMidiPlayer vs MIDITrail: catalog facts
QMidiPlayer	MIDITrail
Free Free and open source under the GPL-3.0 licence.	Free Free download from the developer's site.
Linux	Windows, macOS, iOS
Uses FluidSynth for MIDI playback Packaged on Flathub and AUR	3D visualization of MIDI notes during playback Built-in wavetable synthesizer
No official binaries from the author Homepage shows little sign of recent development	Plays MIDI files only, not audio recordings DLS sound files are no longer supported on macOS
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.