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