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Eventix vs Kontact: catalog facts
Eventix	Kontact
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source, developed by the KDE community.
Linux	Linux
Handles both events and tasks Syncs with CalDAV and Microsoft 365 (Exchange)	Mail, calendar, contacts and feeds in one window Works offline with your data
Linux only Small project with few users	Best suited to the KDE Plasma desktop Large suite with many settings to learn
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
No account needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 24, 2026

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