Kozea/Radicale
Radicale
Radicale is a self-hosted CalDAV and CardDAV server implemented in Python that enables calendar and contact synchronization across multiple clients using open standards. It stores all data directly on the filesystem in a simple folder hierarchy, eliminating the need for an external database, and automatically tracks every change by committing modifications to a Git repository for version history and backup.
The server distinguishes itself through a modular plugin architecture that allows custom Python modules to extend authentication, storage backends, and web interface functionality at startup. Access control is managed through regex-based rules that govern read, write, and delete permissions on individual collections, while user identity is verified through multiple configurable authentication backends before granting access. All client-server communication is secured through TLS encryption.
Radicale includes an event-driven notification system that triggers automated push alerts via email or message queues when calendar events are created or modified. A built-in web interface provides direct management of calendars and address books through the server URL, and the server can be deployed as a Docker container supporting both linux/amd64 and linux/arm64 platforms.
Features
- Self-Hosted Synchronization Servers - Runs a personal or team calendar and contact synchronization server that stores data on the local filesystem without external dependencies.
- CalDAV CardDAV Servers - Serves as a self-hosted CalDAV and CardDAV server implemented in Python for calendar and contact synchronization.
- Calendar Versioning Backups - Automatically tracks every calendar and contact change in a Git repository for version history and backup.
- Calendar and Contact Servers - Shares calendars, to-do lists, journal entries, and contacts over standard CalDAV and CardDAV protocols.
- Private Calendar Hosting - Provides a self-hosted server for secure storage and synchronization of calendar and contact data.
- Calendar Servers - Shares calendars, to-do lists, and journal entries across multiple clients using the standard CalDAV protocol.
- File-Based Storage Systems - Stores calendar and contact data directly on the filesystem in a simple folder structure without requiring a database.
- Filesystem-Based Storage Engines - Stores all calendar and contact data in a simple folder hierarchy on disk without requiring an external database.
- Local Filesystem Storage - Persists all calendar and contact data in a simple folder structure on disk without requiring an external database.
- CardDAV Contact Servers - Shares address books and contact lists across multiple devices using the standard CardDAV protocol.
- CalDAV and CardDAV Protocol Servers - Serves calendars and address books over standard CalDAV and CardDAV protocols for client synchronization.
- Access Authentication - Restricts read and write access to calendars and contacts by requiring user credentials before serving data.
- Data Backup Repositories - Tracks every change to calendars and address books by committing modifications to a Git repository for history and recovery.
- Plugin Systems - Loads user-written plugins at startup to add custom authentication, storage backends, or other functionality.
- Data Versioning Repositories - Tracks every change to calendars and address books by committing them to a Git repository after each storage modification.
- Event Notifications - Triggers push notifications via email or message queues when calendar events are created or modified.
- Communication Encryption - Secures all client-server communication by wrapping the protocol in a TLS-encrypted channel.
- Regex Collection Permissions - Manages read, write, and delete permissions on individual calendars and address books using regex-based rules.
- Regex-Based Permission Rules - Controls read, write, and delete permissions on individual collections using regex-based rule matching.
- CalDAV CardDAV TLS Encryption - Secures all client-server communication by wrapping the CalDAV/CardDAV protocol in a TLS-encrypted channel.
- Authentication Backends - Verifies user identity through multiple configurable authentication backends before granting access to collections.
- Programmatic Plugin Loading - Loads custom Python modules at startup to extend authentication, storage, and web interface functionality.
- Extensible Server Architectures - Extends server functionality with custom Python modules for authentication, storage backends, or web interface modifications.
- Event-Driven Notification Triggers - Triggers automated push notifications via email or message queues when calendar events are created or modified.
- Calendar and Contact Servers - Simple calendar and contact server with low overhead.
- Calendar and Contact Servers - Simple calendar and contact server with low overhead.
- Calendar And Contacts - Listed in the “Calendar And Contacts” section of the Awesome Selfhosted awesome list.
- Calendar and Scheduling - Simple server for CalDAV and CardDAV synchronization.
- Calendar Servers - Lightweight CalDAV and CardDAV server with plugin support.
