Best self-hosted calendar & contacts
[CalDAV](https://en.wikipedia.org/wiki/CalDAV) and [CardDAV](https://en.wikipedia.org/wiki/CardDAV) protocol servers and web clients/interfaces for [Electronic calendar](https://en.wikipedia.org/wiki/Calendaring_software), [address book](https://en.wikipedia.org/wiki/Address_book) and [contact management](https://en.wikipedia.org/wiki/Contact_manager).
We track 10 self-hosted calendar & contacts projects. The median health score in this category is 58, against 3 projects rated healthy or better and none currently flagged as at risk. The table below is ordered by health score, not popularity — the most starred project in a category is frequently not the best maintained one.
| # | Project | Health | Activity | Stars | Built with | Last release |
|---|---|---|---|---|---|---|
| 1 | Radicale Simple calendar and contact server with extremely low administrative overhead. | Healthy · 76 | 5.1k | Python, deb | 24 Sept 2026 | |
| 2 | dayGLANCE Day planner with drag-and-drop time blocking, inbox, recurring tasks, habits, routines, goals, projects and Pomodoro foc | Healthy · 74 | 159 | Javascript, Docker | 27 Sept 2026 | |
| 3 | Keeper.sh Calendar syncing tool that pulls and pushes events between calendar sources and destinations via iCal/ICS or OAuth, with | Healthy · 69 | 1.4k | Docker | 23 Sept 2026 | |
| 4 | Xandikos Open source CardDAV and CalDAV server with minimal administrative overhead, backed by a Git repository. | Steady · 59 | 608 | Python, deb | 18 Sept 2026 | |
| 5 | DavMail POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an Exchange serve | Steady · 58 | 761 | Java | — | |
| 6 | Manage My Damn Life Manage my Damn Life (MMDL) is a self-hosted front end for managing your CalDAV tasks and calendars. | Steady · 58 | 640 | Nodejs, Docker | 13 Sept 2026 | |
| 7 | Baïkal Lightweight CalDAV and CardDAV server based on sabre/dav. | Steady · 57 | 3.3k | PHP | 5 Aug 2026 | |
| 8 | SabreDAV Open source CardDAV, CalDAV, and WebDAV framework and server. | Steady · 55 | 1.7k | PHP | 7 Jul 2026 | |
| 9 | Davis A simple, dockerizable and fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely | Slowing · 41 | 753 | PHP | 6 Sept 2026 | |
| 10 | DAViCal Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store. | Unrated | — | PHP, deb | — |
Which one should you run?
If you want the safest bet on longevity, Radicale is the best-maintained project in this category right now at 76/100. dayGLANCE is the closest runner-up (74/100) — see the side-by-side comparison.
A health score measures whether a project is alive and shipping. It does not measure whether it has the feature you need. Use it to rule options out, then compare on features.