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Clapper vs Celluloid: catalog facts
Clapper	Celluloid
Free Free and open source under GPL and LGPL licences.	Free Free and open source.
Linux	Linux
Native GTK4 interface that fits GNOME GStreamer-based playback	Uses existing mpv configuration and keybindings unchanged Drag and drop playlist editing
Aimed at Linux and the GNOME desktop Format support depends on installed GStreamer plugins	Linux only Relies on mpv for playback features, so advanced tuning happens in mpv config files
Downloadable app	Downloadable app
Open source	Open source
License: GPL and LGPL	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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