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Cog vs Swinsian: catalog facts
Cog	Swinsian
Free Free and open source, supported by donations.	Paid Paid Mac app.
macOS	macOS
Gapless playback and embedded CUE sheet support Plays a very broad range of formats, plus livestreams and HLS	Plays FLAC, Vorbis and WMA natively on macOS Batch tag editing with regex find and replace
macOS only; the Windows and Linux version is still early Requires macOS 12 or later	macOS only Local library player without a streaming service
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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