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Submariner vs Rufin: catalog facts
Submariner	Rufin
Free Free and open source under the 3-clause BSD license.	Free Free and open source under the GPL-3.0-or-later licence.
macOS	Linux
Native Mac interface, not Electron Works with Subsonic and compatible servers	Plays local files and music server libraries in one app Native desktop application rather than a web wrapper
macOS only Needs a Subsonic-compatible server to be useful	Young project with a small user base Supported servers are not detailed in the research
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	No 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.