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Calcure vs khal: catalog facts
Calcure	khal
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Vim keybindings and few keystrokes per action Reads events and tasks from .ics files	Works with CalDAV calendars Both a command-line interface and an interactive terminal UI
Terminal only, with no graphical interface Windows setup needs Python and extra steps	Terminal only, with no graphical interface Calendar syncing is set up separately rather than built in
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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