Jan Štětina

This plugin shows which user has access to which posts under Users administration menu. 
User names are in columns so it is suitable only for smaller counts. Works only in conjunction with User Access Manager and requires PHP 5.3.
It was developed only as helper tool for another plugin which I am going to create in near future and I guess it can be helpful if you are interested how User Access Manager works. Plugin code is (or tries to be) well documented.
This plugin will probably not be updated any further. I provide no guarantees whatsoever.

Post Access Overview

Show who has access to which post in a single table. Works in conjunction with User Access Manager.

chandima

Display log messages from PHP in the browser console in Safari, Firefox (with firebug), and Opera (with the new Dragonfly debugging environment). Essential debugging tool for 
plugin and theme developers. You no longer have to use ‘print_r’ statements from PHP to figure out what is going 
on in the code, which more often than not, messes up the DOM and HTML layout. Displays complex PHP structures like arrays and objects 
in pretty print.
Features
<ul>
<li>Log debug messages directly from themes and plugins.</li>
<li>Display log messages in the browser console, without muddying up the browser display.</li>
<li>Displays complex structures such as arrays and objects in pretty print.</li>
<li>Shows the line number and file from where the message was logged ( you won’t lose track of log statements ).</li>
</ul>
For more info, comments, and feature requests, visit <a href="http://www.turingtarpit.com/2009/05/wplogger" title="Wordpress Logger" rel="nofollow ugc">the plugin homepage</a>.
<h3>Credits</h3>
Code that forces the wplogger plugin to load first was adapted from the WordPress 
<a href="http://inchoo.net/wordpress/wordpress-firephp-plugin/" title="FirePHP plugin" rel="nofollow ugc">FirePHP plugin</a> 
developed by Ivan Weiller.
This plugin is based on <a href="http://pear.php.net/package/Log" title="PEAR Log" rel="nofollow ugc">PEAR Log</a>, the logging framework that is part of the 
PHP PEAR library. Current maintainers Jon Parise, Jan Schneider, and Chuck Hagenbuch. PEAR Log is based on code first 
developed for the Horde 1.3 framework – original authors Chuck Hagenbuch, and Jon Parise.
<h3>Release Notes</h3>
0.3 : Added support for Opera ;
0.2.2 : Fixed formatting issues in readme.txt file;
0.2.1 : Added more detail to the readme.txt file;
0.2 : First official public release;
0.1 : First internal release;

WordPress Logger

Display log messages during plugin and theme development on the console in Safari and Firefox (with Firebug) browsers.

Post Access Overview vs WordPress Logger