Alternatives to Radicale
A small self-hosted CalDAV and CardDAV server for keeping calendars and contacts on your own machine. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Radicale
A small self-hosted CalDAV and CardDAV server for keeping calendars and contacts on your own machine.
Replacements
Listings that take over the same core job as Radicale.
Baïkal
A lightweight self-hosted CalDAV and CardDAV server for syncing your own calendars and contacts.
Baïkal is a GPL-3.0 CalDAV and CardDAV server running on any basic PHP host, adding a web interface for managing users, calendars and address books.
SOGo
An open-source groupware server with webmail, shared calendars and address books for organisations.
SOGo is a larger self-hosted groupware server adding webmail and ActiveSync to CalDAV and CardDAV, 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 self-hosted PHP suite with webmail, tasks and notes alongside CalDAV and CardDAV, requiring more server maintenance than a small sync server.
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.
Tasks.org
An open-source Android to-do list and reminders app that syncs with CalDAV, Google Tasks and more.
Kontact
KDE's personal information manager that combines mail, calendar, contacts and news in one window.
Etar
An open-source Material Design calendar app for Android.
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.
