31 Open Source Caldav Software Projects

A simple CalDAV (calendar) and CardDAV (contact) server.

QOwnNotes is a plain-text file notepad and todo-list manager with markdown support and Nextcloud / ownCloud integration.

📇 Synchronize calendars and contacts.

📆 Calendar app for Nextcloud

Sync Outlook with Google, SOGo, Nextcloud or any other CalDAV/CardDAV server

A CalDAV web client similar to Google Calendar

[Thunderbird Add-On] Central user interface to manage cloud accounts and to synchronize their contact, task and calendar information with Thunderbird

:white_check_mark: Tasks app for Nextcloud

DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at

✅ A simple, standards-based, cli todo (aka: task) manager.

A CalDAV/CardDAV server

This is a CalDAV and CardDAV adapter for EteSync

Tine 2.0 main repository

[Thunderbird Add-On] The CalDAV & CardDAV provider for TbSync to sync contacts, tasks and calendars to Thunderbird.

calcardbackup: moved to https://codeberg.org/BernieO/calcardbackup

CalDAV4j is a java library implementing the CalDAV protocol.

A Go library for WebDAV, CalDAV and CardDAV

a simple, safe, and minimal CalDAV server

:date: 📇 CalDAV and CardDAV client library for JavaScript

🗓 A simple, fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely inspired by Baïkal.

Run sogo in a docker container.

Calendar application for Linux with CalDAV

A lightweight caldav/carddav server for personal use powered by Spring Boot.

Node RED module to get events from a iCal Calender (Google e.g.), icloud or Caldav server

A modular spring-boot application for alexa (amazon) skill.

A CalDav server built on Rails

Calypso CalDAV and CardDAV server

experimental #CalDAV + #WebCal Server in #Golang

python ics to json lib

Sabre.io DAV server adapter for Laravel