Events Calendar

Options for a events.transitionsheffield.org.uk site, see also the list of (hosted) tools here.

WebCalendar
This is the most promising looking, but the demo is currently broken.

http://www.k5n.us/webcalendar.php

Plans
http://www.planscalendar.com/

SuperCali PHP Event Calendar
Looks good but it might be missing RSS feeds and the ability for people to create accounts?

http://supercali.inforest.com/

PHP-Calendar
Too simple, any user can edit and delete any event.

http://www.php-calendar.com/

Active Calendar
Not a stand-alone application.

http://www.micronetwork.de/activecalendar/