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Era vs Calindori: catalog facts
Era	Calindori
Free Free and open source under the GPL-3.0-or-later.	Free Free and open source under the GPL-3.0 or later licence.
Linux	Linux
Designed for the GNOME desktop Open source and available on Flathub	Stores calendars in the standard iCal format Handles both events and to-do items
Young project with a short track record Linux only	Linux only Basic feature set compared with full desktop calendar suites
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
Not stated if an account is 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 October 1, 2026

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