MythThrazz

<p>The plugin is very simple and it doesn’t come with any changable options.</p>
<p>The only feature it has is ability to detect the AdBlock (tested on Chrome AdBlock extension) and defines the HTML class allowing to control the visibility of<br />
the elements on your page based on the detection result eg. you can show an element on your page only if AdBlock is detected, or hide it.</p>


Tiny Simple AdBlock Detector

Detects AdBlocking software and allows to display some html based on detection result. Word for AdBlock for sure. Should work for others.

Admiral

<p>For advanced analytics and revenue recovery solutions install: <a href="https://wordpress.org/plugins/admiral-adblock-suite/" rel="ugc">Admiral Adblock Analytics</a></p>
<h4>Feature: Built-in Tool</h4>
<p>Publishers can serve alternative content that appears when users have enabled an adblocker. Ad Blocking Detector will intelligently determine which to display to the user. Check Screenshots tab for examples.<br />
Use this tool to feature content such as a sign-up form for your email newsletter in the place of a blocked ad. Don’t let adblockers waste prime real estate on your site.</p>
<h4>Feature: Hook In With JavaScript and CSS</h4>
<p>Easily modify the appearance of your site with CSS or execute JavaScript code based on adblock detection results.</p>
<h4>Additional Features:</h4>
<ul>
<li>Detects all major adblocking browser extensions on all major web browsers. Including AdBlock, AdBlock Plus, and Ghostery.</li>
<li>Compatible with WordPress multisite networks.</li>
</ul>
<p>For more information regarding adblock detecting and revenue recovery, please visit <a href="https://getadmiral.com/" rel="nofollow ugc">www.getadmiral.com</a>.</p>


Ad Blocking Detector

If you don't believe go and check his demo
http://adblockingdetector.johnmorris.me/demo/
It says no adblocker is detected even if you have an ad blocker enabled.


edit: it works now. 

It works now

Protect your advertising revenue from adblockers.

Tiny Simple AdBlock Detector vs Ad Blocking Detector