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Spotify vs Nuclear: catalog facts
Spotify	Nuclear
Freemium Lossless streaming requires a Premium subscription.	Free Free and open source under the AGPL-3.0 licence.
Web	Windows, macOS, Linux
Web player that runs in a browser Lossless audio for Premium subscribers	Streams from multiple sources, extendable with plugins Playlist import from other services and JSON files
Lossless audio limited to Premium and supported apps and devices Proprietary service with no local ownership of music	Desktop only, no mobile app macOS may block the app on first launch
Web application, Hosted service	Downloadable app
Closed source	Open source
License not stated	License: AGPL-3.0-only
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 September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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