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Submariner vs Subsound: catalog facts
Submariner	Subsound
Free Free and open source under the 3-clause BSD license.	Free Free and open source under the GPL-3.0 licence.
macOS	Linux
Native Mac interface, not Electron Works with Subsonic and compatible servers	Native desktop client for Navidrome Available on Flathub
macOS only Needs a Subsonic-compatible server to be useful	Needs a Navidrome server to be useful Small project with little documentation on the repository page
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0-only
Not stated if an account is needed	Account 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.