Calendar and Contact Server

The open source Calendar and Contacts Server project is a standards-compliant server implementing the CalDAV and CardDAV protocols. It provides a shared location on the network allowing multiple users to store and edit calendaring and contact information.

​CalDAV is an Internet standard allowing a client to access scheduling information on a remote server. It extends the WebDAV (an HTTP-based protocol for data manipulation) specification and uses the iCalendar format for the data. The protocol is defined by ​RFC 4791. It allows multiple clients access to the same information thus allowing cooperative planning and information sharing. Many server and client applications support the protocol.

​CardDAV is an address book client/server protocol designed to allow users to access and share contact data on a server. The CardDAV protocol is being developed by the IETF and is currently an internet draft.

Calendar and Contact Server is presently implemented as two separate servers: Calendar Server and Contacts Server. The plan is the merge these into one code base.

The sources are available under the terms of the ​Apache License, Version 2.0.

Documentation

• CalendarServer-3.0 (in development)

• Client and Admin tool Library

• Configuring clients for use with the Calendar Server
• Other CalDAV Server Implementations
• CalDAV Server Test & Performance Suite

Getting Involved

• Mailing lists
• IRC channels
• ​Twitter

External Links

• ​The CalDAV Resource site
• ​The Calendaring and Scheduling Consortium
• ​IETF Calsify Working Group