DAViCal

DAViCal is a server for calendar sharing and scheduling based on the CalDAV protocol. It stores iCalendar resources on a centralized server so multiple users and clients can collaborate on shared calendars.

Key Features

• CalDAV implementation for storing and serving iCalendar calendar data
• PostgreSQL-backed storage for calendaring resources and metadata
• Basic delegation of read/write access between users
• Concurrent multi-client access for reading and writing the same calendars over time
• Scheduling support with free/busy time display for meeting planning
• Backward-compatible WebDAV access (read-only or read-write, with caveats)

Use Cases

• Host shared team calendars compatible with common CalDAV-capable clients
• Provide calendaring for organizations that want server-side access control and delegation
• Run a central scheduling and free/busy service for coordinating meetings

Limitations and Considerations

• WebDAV fallback access is supported but not recommended compared to native CalDAV
• Deployment depends on a compatible PHP runtime and a PostgreSQL database

DAViCal is a practical choice when you need a standards-based CalDAV server with broad client interoperability and simple, database-backed management of shared calendars. It fits well for small to mid-sized deployments that prioritize compatibility and straightforward calendaring features.