Institutional Web Calendar Scripts and Info

Can anyone recommend an institutional web calendar that will run in a LAMP environment? 
 
 UNL Event Publisher 	 VT Calendar http://vtcalendar.sourceforge.net/ 
 	 Examination of how to communicate events for an educational institution http://groups.sims.berkeley.edu/EventCalendar/ 
 
 
 Taken from uwebd mailing list