All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
QOwnNotes is a plain-text file notepad and todo-list manager with Markdown support and Nextcloud / ownCloud integration.
Task manager with Todoist, Nextcloud & CalDAV support designed for GNOME
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.
SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices.
sabre/dav is a CalDAV, CardDAV and WebDAV framework for PHP
Calendar sync tool & universal calendar MCP server. Aggregate, sync and control calendars on Google, Outlook, Office 365, iCloud, CalDAV or ICS.
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.
📆 Calendar app for Nextcloud
Docker image for Radicale calendar and contact server :calendar: + security :closed_lock_with_key: + addons :rocket:
Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage.
A CalDAV web client similar to Google Calendar
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
Adaptive native Nextcloud client for mobile and desktop, with dynamic support for the wider Nextcloud app ecosystem.
:white_check_mark: Tasks app for Nextcloud
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.
A CalDAV/CardDAV server backed by Git
a calendar server aiming to be simple, fast and passwordless
Todo application for those who prefer simplicity.
Self-hosted two-way Notion and CalDAV sync on Cloudflare Workers + D1 or Node.js + PostgreSQL
Self-hosted mail server for your own domain: SMTP/IMAP/POP3, CardDAV/CalDAV, React webmail and admin console, one-command Docker Compose.
Self-hosted calendar + tasks in one small container — week view, recurring events done right, read-only .ics sync, Google Calendar/Tasks import, PWA, dashboard embed. No CalDAV, no build step, no CDN.
Alternative to Google Calendar with CalDAV support
Расписание ИТМО в календаре: ICS-подписка и read-only CalDAV для Apple Календаря, Google Календаря, Thunderbird, DAVx⁵, Outlook, Nextcloud и Android.
Native calendar for Google Calendar, iCloud and any CalDAV server. Born on Omarchy Linux, runs on any Linux and on macOS, with a CLI your agent can use. Tauri, Rust, Svelte.
Chronica: calendar & clock for the Omarchy bar. Two-way sync with Google, CalDAV (iCloud, Nextcloud) and JMAP (Fastmail); read-only .ics feeds (Proton, Outlook); reminders, meeting join, offline calendar.