calcurse vs Tasks.org Server alt nono Calendarserver

A side-by-side comparison of two self-hosted calendar & contacts options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up? Compare calcurse with Compare Tasks.org Server alt nono Calendarserver with

CA calcurse Text-based calendar and scheduling application VS TA Tasks.org Server alt nono Calendarserver Archived Standards-compliant calendar and scheduling server

Feature	calcurse	Tasks.org Server alt nono Calendarserver
Deploy effort	Read-the-docs project	Read-the-docs project
Health score	77 · Good	10 · At risk
Status	Actively maintained	Archived
Category	Calendar & Contacts	Calendar & Contacts
License	BSD-2-Clause	Apache-2.0
Language	C	Python
Setup difficulty	Easy	Hard
Min. RAM	16 MB	512 MB
Deployment	binary, source	bare-metal, source
GitHub stars	★ 1,303	★ 507
First released	2004	2007
Replaces	Google Calendar	Google Calendar, Exchange

What are calcurse and Tasks.org Server alt nono Calendarserver?

calcurse

calcurse is a text-based personal organizer with a calendar, an appointments list, and a to-do manager, all in a curses interface. It supports CalDAV synchronization so it can connect to self-hosted calendar servers.

Text-based calendar and to-do
CalDAV synchronization
Very low resource use

Tasks.org Server alt nono Calendarserver

Calendar and Contacts Server is a CalDAV and CardDAV server originally developed by Apple. It provides shared calendaring, scheduling, and directory services for groups.

Originated at Apple
Group scheduling support
Standards-compliant CalDAV

calcurse vs Tasks.org Server alt nono Calendarserver: key differences

The biggest difference is maintenance: Tasks.org Server alt nono Calendarserver's repository is archived and no longer developed, while calcurse is actively maintained. Calcurse is written in C, while Tasks.org Server alt nono Calendarserver is built with Python. Licensing differs — BSD-2-Clause for calcurse versus Apache-2.0 for Tasks.org Server alt nono Calendarserver. Calcurse is the lighter option, starting around 16 MB of RAM against 512 MB for Tasks.org Server alt nono Calendarserver. Calcurse is the more established project (first released 2004), while Tasks.org Server alt nono Calendarserver arrived in 2007. Calcurse has the considerably larger community, at 1,303 GitHub stars versus 507.

Why pick each one

Choose calcurse if…

Released under the BSD-2-Clause license
Easy to set up — beginner-friendly
Active community (1.3k GitHub stars)
Written in C

calcurse details

Choose Tasks.org Server alt nono Calendarserver if…

Released under the Apache-2.0 license
Written in Python
Lightweight — runs in 512 MB RAM

Tasks.org Server alt nono Calendarserver details

Frequently asked questions

Is calcurse or Tasks.org Server alt nono Calendarserver better?

calcurse is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Tasks.org Server alt nono Calendarserver if its specific feature set fits your needs better.

Are calcurse and Tasks.org Server alt nono Calendarserver free and open-source?

Yes. calcurse is licensed under BSD-2-Clause and Tasks.org Server alt nono Calendarserver under Apache-2.0. Both can be self-hosted at no software cost.

Can I run calcurse and Tasks.org Server alt nono Calendarserver with Docker?

calcurse: check the project docs for container support. Tasks.org Server alt nono Calendarserver: check the project docs for container support.

Which is lighter on resources, calcurse or Tasks.org Server alt nono Calendarserver?

calcurse has the smaller minimum footprint at 16 MB of RAM, compared to about 512 MB for Tasks.org Server alt nono Calendarserver. Real-world usage depends on library size, user count, and enabled features.