Calendar Servers and Clients

Calendar servers supporting CalDAV

http://trac.calendarserver.org/ Apple Darwin Calendar Server (open source version of iCal Server)
- open source
- Python/twisted
- no LDAP support
- no web client
- tested without LDAP
http://rscds.sourceforge.net/ DAViCal
- open source
- PHP5
- no web client
- tested with LDAP
- group calendars possible but cumbersome
http://www.k5n.us/webcalendar.php WebCalendar
- open source
- PHP5
- has web client
http://www.bedework.org/bedework/setup.do Bedework
- open source
- Java
- has web client
- hard to configure