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GNOME Contacts vs Fossify Contacts: catalog facts
GNOME Contacts	Fossify Contacts
Free Free and open source under the GPL-2.0-or-later licence.	Free Free and open source under the GPL-3.0 licence.
Linux	Android
Combines contacts from several sources in one view Links entries for the same person automatically	No ads, tracking libraries or unnecessary permissions Groups and favorites with batch email or SMS to a group
Linux only Built around GNOME and its online accounts	Android only Focused on local contact management rather than its own sync service
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-3.0
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 October 2, 2026

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