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Tsukimi vs Fladder: catalog facts
Tsukimi	Fladder
Free Free and open source under GPL-3.0.	Free Free and open source under the GPL-3.0.
Windows, Linux	Linux
Native desktop Jellyfin client mpv playback with gpu-next output	Dedicated app for Jellyfin libraries Single Flutter codebase aimed at several platforms
Requires a Jellyfin server Primarily targets Linux	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
Account needed	Account needed
Needs internet	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.