# Radicale [](https://github.com/Kozea/Radicale/actions/workflows/test.yml) [](https://coveralls.io/github/Kozea/Radicale?branch=master) Radicale is a small but powerful CalDAV (calendars, to-do lists) and CardDAV (contacts) server, that: * Shares calendars and contact lists through CalDAV, CardDAV and HTTP. * Supports events, todos, journal entries and business cards. * Works out-of-the-box, no complicated setup or configuration required. * Can limit access by authentication. * Can secure connections with TLS. * Works with many CalDAV and CardDAV clients * Stores all data on the file system in a simple folder structure. * Can be extended with plugins. * Is GPLv3-licensed free software. For the complete documentation, please visit [Radicale master Documentation](https://radicale.org/master.html). Additional hints can be fo ...