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Jellyfin MPV Shim vs Fladder: catalog facts
Jellyfin MPV Shim	Fladder
Free Free and open source under the GPL-3.0 licence.	Free Free and open source under the GPL-3.0.
Windows, Linux	Linux
Plays Jellyfin media through MPV Offline sync for watching without the server	Dedicated app for Jellyfin libraries Single Flutter codebase aimed at several platforms
Requires a Jellyfin server Not a full library browser on its own	Requires a Jellyfin server to be useful Little documentation in the research about features
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-only
Not stated if an account is needed	Account needed
Works offline	Not stated if it works offline
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.