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Submariner vs Nocturne: catalog facts
Submariner	Nocturne
Free Free and open source under the 3-clause BSD license.	Free Free and open source under the GPL-3.0-or-later.
macOS	Linux
Native Mac interface, not Electron Works with Subsonic and compatible servers	Automatic synced lyrics Caching keeps large libraries responsive
macOS only Needs a Subsonic-compatible server to be useful	Built around Navidrome as the library backend Linux only
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0-or-later
Not stated if an account is 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.