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vCard Studio vs GNOME Contacts: catalog facts
vCard Studio	GNOME Contacts
Free Free, released under CC0-1.0.	Free Free and open source under the GPL-2.0-or-later licence.
Windows, Linux	Linux
Merge, split and deduplicate vCard files Wide range of import and export formats	Combines contacts from several sources in one view Links entries for the same person automatically
Releases are infrequent; latest is 1.5.0 from 2024 No macOS or mobile versions	Linux only Built around GNOME and its online accounts
Downloadable app	Downloadable app
Closed source	Open source
License: CC0-1.0	License: GPL-2.0-or-later
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 1, 2026

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