📅

Calendar & Contacts

Replaces: Google Calendar, iCloud

Free calendar and contact management with open standards like CalDAV and CardDAV. Independent alternatives to Google Calendar and iCloud.

🛡️ 8 Open Source Tools
N

Nextcloud Calendar

Integrated calendar management within the Nextcloud platform

1.1k
↳Google CalendariCloud Calendar
AGPL-3.0● Easy
Aug 2026
R

Radicale

Lightweight CalDAV and CardDAV server

3.3k
↳Google CalendariCloud Calendar
GPL-3.0●● Medium
Aug 2026
B

Baikal

Lean CalDAV and CardDAV server with web interface

2.6k
↳Google CalendariCloud Calendar
GPL-3.0● Easy
Aug 2026
E

EteSync

End-to-end encrypted calendar and contact synchronization

1.5k
↳Google CalendariCloud Calendar
AGPL-3.0●● Medium
Feb 2026

Cal.diy

Scheduling infrastructure for absolutely everyone.

42.4k
↳Google CalendariCloud
MIT● Easy
Aug 2026

Calendar

A simple calendar with events, customizable widgets and no ads.

1.9k
↳Google CalendariCloud
GPL-3.0● Easy
Aug 2026

Contacts

Easy and quick contact management with no ads, handles groups and favorites too.

782
↳Google CalendariCloud
GPL-3.0● Easy
Aug 2026

Manage My Damn Life Nextjs

Manage My Damn Life (MMDL) is a self-hosted front end for managing your CalDAV tasks and calendars.

556
↳Google CalendariCloud
GPL-3.0●● Medium
Aug 2026