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

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

📇 Synchronize calendars and contacts.

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

📆 Calendar app for Nextcloud

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

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

A CalDAV web client similar to Google Calendar

✅ 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.

📆 Docker image for Radicale calendar and contact server + security 🔐 + addons 🚀

A CalDAV/CardDAV server

This is a CalDAV and CardDAV adapter for EteSync

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

A Go library for WebDAV, CalDAV and CardDAV

Calendar client for CalDAV

jtx Board allows you to manage your Journals (like meeting minutes), Notes and Tasks in one Android app. The app is compatible with the iCal standard (RFC5545) and is integrated with DAVx5 to allow the synchronisation of entries through CalDAV.

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

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