Compare software

Gelly vs Submariner: catalog facts
Gelly	Submariner
Free Free and open source under the GPL-3.0-or-later.	Free Free and open source under the 3-clause BSD license.
Linux, Command line	macOS
Supports both Jellyfin and Subsonic servers Gapless playback and ReplayGain	Native Mac interface, not Electron Works with Subsonic and compatible servers
Needs your own Jellyfin or Subsonic-compatible server Linux only	macOS only Needs a Subsonic-compatible server to be useful
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: BSD-3-Clause
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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