oishikazuo

Self Shortener is a WordPress plugin to be able to handle URL shortening 
feature, by your WordPress site itself.
Self Shortener can:
<ul>
<li>create short URL using your site URL.</li>
<li>generate random short URL key, by specifying key length.</li>
<li>specify fix URL key instead of random generating.</li>
<li>handle I18N message. Currenly supports English and Japanese.</li>
</ul>
See http://giraffy.jp/products_en/wordpress/selfshortener/ . 
(In Japanese, http://giraffy.jp/products/wordpress/selfshortener/ )

Self Shortener

URL Shortener handled by your WordPress site itself.

pirmax

PopUP Shortlink to display a small window displaying the URL with the API Bit.ly, the API TinyURL.com or the API 0Ab.fr when the visitor clicks on a link in an article. Visitor can continue his visit to the site if he clicks on close or continue.
It is possible to share the shortcut on different social networks like Twitter, Facebook, Del.Icio.Us…
For more information, you can watch this video : http://www.dailymotion.com/video/xio82q_popup-shortlink-un-reducteur-d-url-pour-wordpress

PopUP Shortlink

PopUP Shortlink to display a small window displaying the URL with the API Bit.ly, the API 0Ab.fr, and the API TinyURL.com when the visitor clicks on a …

Self Shortener vs PopUP Shortlink