CMS Calendar Suggestions

Can anyone recommend a good web-based, community calendar?

* php/mysql (open source is preferable)
* secure, supported with security updates as needed
* coded well according to current standards
* template system for plugging in any site design
* login that can integrate with wordpress/punbb login
* xhtml/css, standards compliant
* streamlined and fast, not bloated
* multiple users, permissions, categories, display options, email notification, rss, etc
* complements other CMSs I like:  punBB, Wordpress, Singapore, phpList

I've found these so far:

CalendarScript
http://www.calendarscript.com/
(smokerise.org)
It's CGI instead of PHP, and the database is flat files instead of MySQL.  Seems to have all the basic calendar features.  View events in a grid or list format, and by the month, week, 2-week, 3-week, 4-week, or daily level.  Customizable Templates, Flexible Event Definition, User Authentication, Assign Permissions.

ExtCalendar
http://extcal.sourceforge.net/
(tuckeroptimistclub.org)
View events in grid or flat format, monthly, weekly, daily. Categories, Search, Themes, Recurrent Events, Users and Groups management, Template Configuration.  It sounds good, but it doesn't seem to be supported: last release was 2004-12-24.

SuperCali <<== Looks Good
http://supercali.inforest.com/
(scriptsearch.com)
The feature list looks good and demo is nice and clean.  Only been in development for about a year so it may not be stable and secure; but it's been developed aggresively and it has a following so it's worth considering.  Nested event categories, Multiple moderators and users, Multiple dates for each event, Multiple calendar views, Drop-down venue and contact selection, Javascript to assist data entry, XHTML/CSS output.

PHP Event Calendar
http://www.softcomplex.com/products/php_event_calendar/
(scriptsearch.com)
It looks nice and has several basic configuration options.  But it uses text files instead of MySQL for the database.

CaLogic
http://www.calogic.de/
(installatron.com)
Most of the usual features, plus Event reminder email subscriptions.  But it doesn't appear to be supported: last release was 2005/7/19, and there's very little activity on the forum.

Calendarix
http://www.calendarix.com/index.php
(hotscripts.com)
Lots of features and looks nice.  Cost is $80.  Free basic version and trial advanced version.

TotalCalendar
http://www.sweetphp.com/nuke/modules.ph … ;script=12
(hotscripts.com)
Looks fancy, maybe too fancy.  Cost is $35, but no trial version.

VCalendar <<== Looks Good
http://www.ultraapps.com/
(opensourcecms.com)
Free, open source, and well-supported.  Localization features with Internationalization in English, Russian and German, Dynamic CSS, Annual, monthly, weekly and daily calendar views, Multiple categories, Recurring and all-day events, Role-based user permissions and calendar configuration.

Webcalendar <<== Looks Good
http://www.k5n.us/
(opensourcecms.com)
Free, open source and well-supported.  Lots of features.  XHTML/CSS compliant, Multi-users, 30 supported languages, View calendars by day, week, month or year, View another user's calendar, View one or more users' calendar via layers on top of your own calendar, Repeating events including support for overriding or deleting (exceptions), Configurable custom event fields, User-configurable preferences for colors, 12/24 time format, Sun/Mon week start, Checks for scheduling conflicts, Email reminders for upcoming events, Email notifications for new/updated/deleted events, Export events to iCalendar, vCalendar or Palm, Import from iCalendar, vCalendar or Palm, Public or private calendars, Users can make their calendar available publicly to anyone with an iCalendar-compliant calendar program (such as Apple's iCal, Mozilla Calendar or Sunbird), Publishing of free/busy schedules (part of the iCalendar standard), RSS support that puts a user's calendar into RSS, Subscribe to "remote" calendars (hosted elsewhere on the net) in either iCalendar or hCalendar formats, User authentication: Web-based, HTTP, LDAP or NIS.