ThemeShock

Custom 404, helps you customize your 404. 
From the dashboard options you’re able to modify the background, the image and the fonts color and style.
This page will show users the last post on your site, so that they may choose to follow one of this instead of leaving your page.
<h3>Features</h3>
<ul>
<li>Customizable background</li>
<li>Several Patterns</li>
<li>Multiple fonts</li>
<li>24 additional images.</li>
<li>5 Different languages</li>
</ul>

Custom 404 Error Page: Unilimited designs and colors

Custom 404, creates a 404 page that is set to the default one of your WordPress installation.
This page is fully customizable from the dashboard.

Federico Andrioli

Log/Debug the PHP code in your Theme/Plugin with your Browser Console (no extension needed). Made for themes and plugins developers.
HOW TO CHECK IF BUGFU IS WORKING
Open your Browser Console, if you see this header, BugFu is working properly
<pre><code>################################
#### BugFu Console Debugger ####
################################
</code></pre>
HOW TO OPEN YOUR BROWSER JAVASCRIPT CONSOLE
If you’ve never used the Browser JavaScript Console before, here’s how you open it:
<ul>
<li>Chrome PC shift+ctrl+j – Chrome Mac alt+cmd+j</li>
<li>Firefox PC shift+ctrl+k – Firefox Mac alt+cmd+k</li>
<li>Safari PC shift+ctrl+c – Safari Mac alt+cmd+c</li>
</ul>
HOW TO USE BUGFU WITH WORDPRESS
Call the log static method from wherever you are within the WordPress PHP code
<pre><code><?php /* WORDPRESS CODE HERE */

/* Call it with no arguments to only output some backtrace info */
BugFu::log();

/* Call it with a string argument to output that string content */
BugFu::log($my_string_content);

/* Call it with a non-string argument to output the structured
 representation of that argument - it uses var_export() */
BugFu::log($my_object-array-variable);

/* Call it with the second optional argument set to "false"
 to turn off the backtrace info (which is on by default) */
BugFu::log($my_content, false);
</code></pre>
DEVELOPERS
Official Github repository: 
https://github.com/fedeandri/bugfu-console-debugger

BugFu Console Debugger

Good plugin

Really great plugin. I'm surprised it does not seem to be well known under developers.

Must have for developers

Very useful !

This is a nice plugin to use in concert with the Chrome dev console. It is easy to use and works well.  Thank you for making it available. 

Easy to use and works well

Log/Debug the PHP code in your Theme/Plugin with your Browser Console (no extension needed)

Custom 404 Error Page: Unilimited designs and colors vs BugFu Console Debugger