Compare software

calcurse vs When: catalog facts
calcurse	When
Free Free to download, with donations accepted.	Free Free software under the GPL-2.0 license.
Linux, Command line	Command line
Recurring appointments, all-day events and to-dos Scriptable command-line mode	Stores calendar entries in an editable text file Lists upcoming items and prints calendar grids
CalDAV sync is experimental Terminal interface only	Uses a command-line interface The site describes it as a minimal personal calendar
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0-only
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 8, 2026

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