Radicale
Simple calendar and contact server with extremely low administrative overhead.
- Groupware & Calendars
- Python
- GPL-3.0
- Actively maintained
GitHub stats
- GitHub stars
- 5,087
- Forks
- 531
- Open issues
- 9
- Commits, last 12 months
- 1,431
- Last commit
- Oct 6, 2026
- Latest release
- v3.8.1Sep 24, 2026
- Created
- Aug 11, 2011
Data from the GitHub API, refreshed daily.
About Radicale
Simple calendar and contact server with extremely low administrative overhead. Radicale is open source under the GPL-3.0 license and written mainly in Python, so you can read the code, run it on your own hardware and keep full control of your data.
The project has 5,087 stars and 531 forks on GitHub, with 1,431 commits over the last year. It installs natively rather than through an official Docker image, so plan for a short manual setup.
Topics
- python
- caldav
- icalendar
- carddav
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What is Radicale?
Radicale is a free, open-source app you can host on your own server, listed in our Groupware & Calendars category. Simple calendar and contact server with extremely low administrative overhead. The source code lives at github.com/Kozea/Radicale, where it has 5,087 stars.
Is Radicale free and open source?
Yes. Radicale is open-source software released under the GPL-3.0 license, so you can self-host it at no cost. You only pay for the server it runs on, and some projects also offer an optional paid cloud plan.
Can I run Radicale with Docker?
Radicale does not list an official Docker image. It installs natively (Python and deb), so follow the install steps in its README or look for a community-maintained container.
What are the best alternatives to Radicale?
Popular open-source alternatives to Radicale include Nextcloud, Seafile and Colanode. Radicale itself is a self-hosted alternative to Google Calendar.
Is Radicale actively maintained?
The most recent commit to Radicale was on Oct 6, 2026 with 1,431 commits in the past twelve months. The latest release is v3.8.1, published Sep 24, 2026. Check the open issues on GitHub to gauge how quickly maintainers respond.