Best self-hosted Calendar & Contacts apps
CalDAV and CardDAV protocol servers and web clients/interfaces for Electronic calendar, address book and contact management.
9 open source Calendar & Contacts tools you host on your own server — with full control of your data and no per-user cost.
Radicale
★ 4,764Simple calendar and contact server with extremely low administrative overhead.
Baïkal
★ 3,217Lightweight CalDAV and CardDAV server based on sabre/dav.
SabreDAV
★ 1,712Open source CardDAV, CalDAV, and WebDAV framework and server.
Keeper.sh
★ 1,160Calendar syncing tool that pulls and pushes events between calendar sources and destinations via iCal/ICS or OAuth, with support for anonymized busy/free events.
DavMail
★ 734POP/IMAP/SMTP/Caldav/Carddav/LDAP exchange gateway allowing users to use any mail/calendar client with an Exchange server, even from the internet or behind a firewall through Outlook Web Access.
Davis
★ 711A simple, dockerizable and fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely inspired by Baïkal.
Manage My Damn Life
★ 601Manage my Damn Life (MMDL) is a self-hosted front end for managing your CalDAV tasks and calendars.
Xandikos
★ 577Open source CardDAV and CalDAV server with minimal administrative overhead, backed by a Git repository.
DAViCal
★ 108Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store.
Frequently asked questions
What are the best self-hosted Calendar & Contacts tools?
Among the 9 options, the most popular include Radicale, Baïkal, SabreDAV. Compare license, platform and popularity in the list below.
Is there a free open source alternative for Calendar & Contacts?
Yes — all 9 tools on this page are open source and you run them on your own server, with no monthly fee.
Where can I host a Calendar & Contacts app?
On a home server (homelab) or a cheap VPS from ~€4/mo. See the suggestions on this page.