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Azul Box vs NeoDLP: catalog facts
Azul Box	NeoDLP
Free Free and open source under the GPL-3.0.	Free Free and open source under the MIT licence.
Linux	Windows, macOS, Linux, Browser extension
Graphical front end for yt-dlp and ffmpeg MusicBrainz metadata for downloaded music	Downloads from thousands of sites via yt-dlp Playlist downloads and a built-in library
Linux only Small single-developer project	Pre-1.0 version numbering Depends on yt-dlp keeping up with site changes
Downloadable app	Downloadable app, Browser extension
Open source	Open source
License: GPL-3.0-only	License: MIT
No account needed	No account 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 1, 2026

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