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Serigy vs Diodon: catalog facts
Serigy	Diodon
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source.
Linux	Linux
Automatic background clipboard capture Pinned favourites that are not overwritten	Available in the Debian and Ubuntu repositories Lightweight GTK application
Only 6 to 12 slots by design Linux only	In low maintenance mode with no new features planned Built around the Unity desktop
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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