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Nuclear vs Musictube: catalog facts
Nuclear	Musictube
Free Free and open source under the AGPL-3.0 licence.	Paid Sold as a paid app, also available through the Mac App Store.
Windows, macOS, Linux	Windows, macOS, Linux
Streams from multiple sources, extendable with plugins Playlist import from other services and JSON files	Plays albums in track order with covers and lyrics Easy switching between studio, live and cover versions
Desktop only, no mobile app macOS may block the app on first launch	Depends on YouTube for all content and needs a connection Linux builds target Ubuntu 23.04 and Debian derivatives
Downloadable app	Downloadable app
Open source	Closed source
License: AGPL-3.0-only	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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