calcurse.org

What It Is

calcurse is a command-line, text-based calendar and scheduling application for tracking events, appointments, and daily tasks. It uses a curses-style text interface and focuses on speed, customization, and scriptability. It is clearly better suited to developers, system administrators, and users who spend a lot of time in the terminal than to general office users looking for a graphical interface and cloud collaboration features.

Core Features

In terms of functionality, calcurse covers the main needs of a personal calendar tool: it supports events, appointments, TODO items, all-day events, and recurring appointments. You can attach notes to schedule items and edit them with your preferred text editor. Its notification system is fully configurable and can even send emails or trigger other reminder methods. What makes it especially developer-friendly is its powerful non-interactive command-line interface, which can filter and format appointment data for easy integration into scripts.

Integrations and Ecosystem

calcurse supports iCalendar import, as well as iCalendar and pcal export, making it easier to exchange data with other calendar systems. It also provides hooks that can run scripts when data is loaded or saved, for example to include calendar data in version control. Experimental CalDAV support offers the possibility of syncing with mobile devices, but “experimental” means users need to verify stability and compatibility themselves. The interface is available in English, French, German, Dutch, Spanish, and Italian, and supports UTF-8.

Pricing and Open-Source Status

The page provides source code downloads, checksums, and signatures, and encourages users to contribute code or support the project through donations. The main text does not list commercial pricing, an enterprise edition, SLA, or specific license information. Therefore, it can only be concluded that the source code is available and that the project has community-oriented characteristics; the exact license details cannot be confirmed further from the provided content.

Pros, Cons, and Who It’s For

Its strengths are that it is lightweight, local-first, highly configurable in terms of shortcuts and notifications, and well suited to automation and version-controlled workflows. Its downsides are that the command-line interaction is not friendly to casual users, and the page does not clearly describe any official cloud service, mobile app, or commercial support. It is best for technical users who prefer the terminal, want to manage schedules in a text-based way, and are willing to extend their workflow with scripts.

Access from China

The crawled content does not provide information about access from mainland China, mirrors, or payment methods, so availability should be considered unknown. If alternatives are needed, similar terminal/text-based workflow tools such as khal, remind, taskwarrior, or Emacs org-mode may be worth considering.