Alternatives to Baïkal
A lightweight self-hosted CalDAV and CardDAV server for syncing your own calendars and contacts. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Baïkal
A lightweight self-hosted CalDAV and CardDAV server for syncing your own calendars and contacts.
Replacements
Listings that take over the same core job as Baïkal.
Radicale
A small self-hosted CalDAV and CardDAV server for keeping calendars and contacts on your own machine.
Radicale is also a small self-hosted CalDAV and CardDAV server, light enough for modest hardware, but it offers no web admin interface like Baïkal's.
SOGo
An open-source groupware server with webmail, shared calendars and address books for organisations.
SOGo adds webmail and shared calendars on top of CalDAV and CardDAV, plus ActiveSync, but it needs existing mail and directory servers to integrate with.
Horde Groupware
A self-hosted open-source PHP suite with webmail, calendar, contacts, tasks and notes.
Horde Groupware is a fuller PHP groupware suite with webmail, tasks and notes alongside CalDAV and CardDAV sync, at the cost of an older codebase to maintain.
Similar software
Related functionality, not a direct replacement.
DAVx⁵
An Android app that syncs contacts, calendars and tasks over CardDAV and CalDAV and accesses WebDAV files.
Etar
An open-source Material Design calendar app for Android.
Kontact
KDE's personal information manager that combines mail, calendar, contacts and news in one window.
calcurse
A text-based calendar and to-do application for the terminal with reminders and scripting options.
Proton Calendar
An end-to-end encrypted calendar from Proton, available on the web and on iOS and Android.
Google Calendar
Google's free web calendar for scheduling events, used with a Google account and synced across devices.
