42 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 via kalender-events

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

:calendar: Docker image for Radicale calendar and contact server + security :closed_lock_with_key: + addons :rocket:

Milton Java WebDAV / CalDAV / CardDAV Server Library that runs on Windows, Mac, Linux, Android and iOS.

Kalle is a blitz.js based appointment scheduling tool that allows you to schedule an appointment with customers, collegues or friends within seconds.

CalDAV client in the Elixir language

WebDAV, CALDAV, and CARDDAV client for Nodejs and the Browser

Tutorial / Anleitung um mit Baikal Kontakte und Kalender sicher zu verwalten und speichern

A daemon to display notifications of iCalendar events

Lightweight iCalendar (RFC 5545) encoder for Swift

DAVx⁵ is an open-source CalDAV/CardDAV suite and sync app for Android. You can also access your online files (WebDAV) with it.

CalDAV .NET client library

Gets events from an ical-URL/file, a caldav-server or from the iCloud.