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GNOME ContactsKontact
Free

Free and open source under the GPL-2.0-or-later licence.

 Free

Free and open source, developed by the KDE community.

Linux Linux
  • Combines contacts from several sources in one view
  • Links entries for the same person automatically
  • Mail, calendar, contacts and feeds in one window
  • Works offline with your data
  • Linux only
  • Built around GNOME and its online accounts
  • Best suited to the KDE Plasma desktop
  • Large suite with many settings to learn
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0-or-later License not stated
No account needed No account needed
Works offline Works offline

Checked October 1, 2026

Checked September 24, 2026

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