Ramoonus

<p>This plugin adds the Modernizr to your WordPress installation.<br />
Modernizr is a small JavaScript library that detects the availability of native implementations for next-generation web technologies, i.e. features that stem from the HTML5 and CSS3 specifications. Many of these features are already implemented in at least one major browser (most of them in two or more), and what Modernizr does is, very simply, tell you whether the current browser has this feature natively implemented or not.</p>
<p>For documentation visit http://www.modernizr.com/docs/</p>


Modernizr for WordPress

The 2.8.4 version inserts broken javascript link.  I posted a message about this in the support section for the plugin and the author has not responded or fixed the problem.  Now, any site that I've added this plugin to can be broken if the user runs an update.  

Instead, if you need Modernizr, insert the following into your header.php file just after <?php wp_head(); ?>:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>

Doesn't work - Plugin Defunct

This plugin adds the Modernizr to your WordPress installation.

José Marques

<p>Older versions of Internet Explorer are a pain that doesn’t go away. Of course everyone tries to design and implement themes that work well on all browsers, but there’s always something that doesn’t quite work in an older version of Internet Explorer.<br />
What this plugin does is display a message to the user informing that the version of Internet Explorer he/she is using is old.</p>
<p>There are some options you can change like the text, the URI of the site with browser info and an option to show or hide the dismiss button, in case you really don’t want to allow the users see your site unless they have a decent browser.</p>
<p>There’s a CSS file with all the styles you can change.</p>
<h3>Features</h3>
<ul>
<li>Personalizable text</li>
<li>Personalizable display options</li>
<li>Choose the recommended site</li>
</ul>
<h3>Todo</h3>
<ul>
<li>Customizable CSS on the plugin admin</li>
</ul>


IE Check

Checks if the browser is an older version of Internet Explorer, releases rage if it's IE

Modernizr for WordPress vs IE Check