hostinginfo360

This plugin will collect Google Page Rank and Alexa Rank and display it in the footer of your blog. 
The result will be collected 1 time each day.
This release is compatible with all WordPress versions since 3.0.
<h3>License</h3>
Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial blog.

Web Rank Get

This plugin will collect Google Page Rank and Alexa Rank and display it in the footer of your blog.

susheelhbti

This Plugin lets you know your ALEXA RANK. This offer several ways to integrate in your blog you can use widgets , short code or plugin API.
As using this you can get ALEXA RANK in php variable so you can easily integrate and customize look of your ALEXA RANK.
<ol>
<li>
To Print Alexa Rank using short code
<pre><code>[AlexaRank]
</code></pre>
</li>
<li>
To Print Alexa Rank in your theme
<pre><code>echo getAlexaRank();

or

AlexaRank();
</code></pre>
</li>
<li>
To Print Alexa Rank of a website using theme
<pre><code>echo getAlexaRankbySiteName("www.sakshamappinternational.com");

or 

AlexaRankbySiteName("www.sakshamappinternational.com");
</code></pre>
</li>
<li>
To print Alexa Rank in side bar
<pre><code>use widget Igreen Alexa Site Rank Widget
</code></pre>
</li>
</ol>
<h3>Manual Installation</h3>
Upload the plugin to the plugins directory, extract it and after activate it.

Igreen Alexa Site Rank

Get your updated ALEXA RANK in widgets or integrate in theme using plugin API/ shortcode.You can display your page rank  anywhere in your blog

Web Rank Get vs Igreen Alexa Site Rank