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Coppelia vs Gelly: catalog facts
Coppelia	Gelly
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the GPL-3.0-or-later.
macOS, Linux, Android	Linux, Command line
Offline pinning with download and cache controls Smart lists built from listening rules	Supports both Jellyfin and Subsonic servers Gapless playback and ReplayGain
Requires a Jellyfin server iOS download offered only as a simulator build	Needs your own Jellyfin or Subsonic-compatible server Linux only
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0-or-later
Account needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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