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Showtime vs Clapper: catalog facts
Showtime	Clapper
Free Free and open source as part of GNOME.	Free Free and open source under GPL and LGPL licences.
Linux	Linux
Minimal interface with controls that fade out during playback Subtitle and audio track selection, and playback speed control	Native GTK4 interface that fits GNOME GStreamer-based playback
Linux only Deliberately few advanced options compared with larger players	Aimed at Linux and the GNOME desktop Format support depends on installed GStreamer plugins
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL and LGPL
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

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