carddav

All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

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

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

A third-party, open-source ProtonMail CardDAV, IMAP and SMTP bridge

📇 Synchronize calendars and contacts.

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

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

Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage.

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

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

🗓 A modern, simple, feature-packed, fully translatable admin interface for sabre/dav based on Symfony 7 and Bootstrap

📇 Contacts app for Nextcloud

A CalDAV/CardDAV server backed by Git

a calendar server aiming to be simple, fast and passwordless

A Go library for WebDAV, CalDAV and CardDAV

WebDAV, CALDAV, and CARDDAV client for js runtimes and the Browser

Adaptive native Nextcloud client for mobile and desktop, with dynamic support for the wider Nextcloud app ecosystem.

This is a CalDAV and CardDAV adapter for EteSync

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

Tine 2.0 main repository