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calcurse vs Org mode: catalog facts
calcurse	Org mode
Free Free to download, with donations accepted.	Free Free and open source, with optional support through Liberapay.
Linux, Command line	Windows, macOS, Linux
Recurring appointments, all-day events and to-dos Scriptable command-line mode	Notes, tasks, agenda and documents in one plain text format Files are easy to sync and version control
CalDAV sync is experimental Terminal interface only	Requires GNU Emacs for the full feature set Steep learning curve for people new to Emacs
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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