Tehsmash

A quick simple solution to the problem of hosting many events 
with many people attending, and needing to know who is going, 
who is not going, and who hasnt even bothered to check ;-).
<h3>Uninstallation</h3>
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WARNING: This will also remove all data about events stored by Ultimate Events. 
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Step 1. Deactivate the plugin.
Step 2. Delete the plugin.
<h3>Usage</h3>
To add an event go to the Ultimate Events Menu page and click Add New! 
Complete the form and click the Submit button to save the event.
To display events on your website and allow other users to subscribe to 
events add the [ultievt_display] shortcode to your wordpress page.
To display everyone’s availability for various events, use the 
[ultievt_availability] shortcode in your wordpress page.
Editing events and also copying the data from events can be done in the 
Ultimate Events menu page inside the wordpress admin section.
Managing other users attendance can be done by the events admin via the 
‘Manage Attendance’ page included with the plugins backend.
<h3>License</h3>
Copyright 2012 Sam “Tehsmash” Betts (email : sam@code-smash.net)
This program is free software; you can redistribute it and/or modify 
it under the terms of the GNU General Public License, version 2, as 
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Ultimate Events

A Plugin to manage multiple people attending multiple events.

samwilson

A simple address book plugin.
You can view and edit addresses (names, addresses, phone numbers, email addresses, etc.) in the administration interface (under Manage > Addressbook or as its own top-level menu item), or embed a read-only list of addresses in posts and/or pages.
Addressbook features:
<ul>
<li>Gravatar support for both address lists;</li>
<li>hCard microformat support in the address list.</li>
</ul>
Still to come (hassle me if you want these now):
<ul>
<li>Import/export to a bunch of formats;</li>
<li>Firefox Operator addon scripts to export external addressed into Addressbook;</li>
<li>Pass various options to the <code><addressbook /></code> element, to sort and limit and whatnot;</li>
<li>Templates for the address list display;</li>
<li>Photo upload (probably over-ride the Gravatar, and show a note that there is a Gravatar?);</li>
<li>Custom fields;</li>
</ul>

Addressbook

A simple address book plugin.  View addresses in the admin back-end or embedded in a post or page.

Ultimate Events vs Addressbook