# Open-source alternatives to Google Calendar

> Google Calendar: Google's online calendar with sharing and event invites. The best self-hosted, open-source alternatives are Radicale, Baïkal and Nextcloud. All of them can run on your own server, so your data stays under your control. All 7 apps here are open source.

## Key facts

| Fact | Value |
|---|---|
| Commercial product | Google Calendar |
| Category | Groupware & Calendars |
| Alternatives listed | 7 |
| Top pick | Radicale (5,087 stars, GPL-3.0) |
| Canonical URL | https://appsgit.com/alternatives/google-calendar |

## Alternatives, in recommended order

- [Radicale](https://appsgit.com/apps/radicale): Simple calendar and contact server with extremely low administrative overhead. (5,087 stars, GPL-3.0, Python)
- [Baïkal](https://appsgit.com/apps/baikal): Lightweight CalDAV and CardDAV server based on sabre/dav. (3,328 stars, GPL-3.0, PHP)
- [Nextcloud](https://appsgit.com/apps/nextcloud): Access and share your files, calendars, contacts, mail and more from any device, on your terms. (37,003 stars, AGPL-3.0, PHP)
- [Davis](https://appsgit.com/apps/davis): A simple, dockerizable and fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely inspired by Baïkal. (757 stars, MIT, PHP)
- [SabreDAV](https://appsgit.com/apps/sabredav): Open source CardDAV, CalDAV, and WebDAV framework and server. (1,725 stars, BSD-3-Clause, PHP)
- [SOGo](https://appsgit.com/apps/sogo): SOGo offers multiple ways to access the calendaring and messaging data. CalDAV, CardDAV, GroupDAV, as well as ActiveSync, including native Outlook compatibility and Web interface. (2,171 stars, GPL-2.0, Objective-C)
- [Xandikos](https://appsgit.com/apps/xandikos): Open source CardDAV and CalDAV server with minimal administrative overhead, backed by a Git repository. (607 stars, GPL-3.0, Python)

## Comparisons

- [Nextcloud vs ownCloud](https://appsgit.com/compare/nextcloud-vs-owncloud)
- [Nextcloud vs Seafile](https://appsgit.com/compare/nextcloud-vs-seafile)
- [Nextcloud vs Syncthing](https://appsgit.com/compare/nextcloud-vs-syncthing)

More in this category: [Groupware & Calendars](https://appsgit.com/categories/groupware-calendars)

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Canonical page: https://appsgit.com/alternatives/google-calendar
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