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Koel vs Supysonic: catalog facts
Koel	Supysonic
Freemium The open-source server is free; Koel Plus is a paid edition with extra features.	Free Free and open source.
Android, iOS, Web, Self-hosted	Self-hosted
Multi-user support with smart playlists and favourites Metadata editing and uploads from the web interface	Works with Subsonic-compatible clients Transcoding for various audio formats
Some features are reserved for the paid Koel Plus edition Requires running and maintaining your own server	No bundled player app Smaller community than Navidrome or Airsonic
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License not stated	License: AGPL-3.0
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 September 24, 2026

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