Surprisingly few universities seem to have web-based institutional calendars similar to what we're looking for. Ability to handle a large number of events per day and per year. Categorization and alternate views of events by type, audience, etc. Currently in beta test. Written in perl 5 for Unix and based on the ZyView WWW database system.
Software is available .
Publishes events either by running an HTTP server on the user's desktop or by periodically exporting HTML files to an HTTP server elsewhere. Available for Windows and Macintosh. Nor is it clear how it manages access control in order to permit cooperative management of a unified calendar across a large institution. No non-graphical format. Individual access control with transparent ownership of calendar items.