gentlesource

This plugin creates a short URL from the blog post permalink and stores it 
in the database. The URL is displayed below the blog post along with a link 
to twitter that passes the short URL on.
You can use all short URL services that offer an API. Here are a few:
<ul>
<li>http://melt.li/</li>
<li>http://lin.io/</li>
<li>http://unrelo.com/</li>
<li>http://bit.ly/</li>
<li>http://u.nu/</li>
<li>http://tinyurl.com/</li>
</ul>

GentleSource Short URL

Automatically shortens the blog post URL.

Urlshortener.co

This plugin extract all the outbound links of your Blog or Website to your <a href="http://www.urlshortener.co" title="Link Shortener" rel="nofollow ugc">Urlshortener.co Account</a> and short these automatically with Anti-Adblock Solution System to earn money. This is ideal if you want a count of the amount of links on every page of your website, or want to earn money with these links. So It can be used for things: such as collecting all the internal links on your website and then creating a CSV file which Urlshortener can create in seconds.

Urlshortener Link Extractor

This plugin extract all the outbound links to your Urlshortener.co Account and short these automatically.

GentleSource Short URL vs Urlshortener Link Extractor