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.

Peter

Adds shortcodes [blogurl], [posturl], [templateurl], and [childtemplateurl] for WordPress 2.6 and up. Use [blogurl] to generate your site URL. It offers the parameters “slash” and “noslash” (to add a trailing slash; [templateurl] and [childtemplateurl] also support this), as well as “uploads” to produce the URL of the uploads folder and “wordpress” to produce the URL of your WP files. Use [posturl id=3] (replace “3” with a post ID) to generate the permalink for any post.
<h4>Features</h4>
<ul>
<li>
[blogurl] will generate <code>http://www.yoursite.com/</code>
</li>
<li>
[blogurl wordpress] will generate the URL to the root of your WordPress files, if they are in a different location than your site root
</li>
<li>
[blogurl noslash] will generate <code>http://www.yoursite.com</code>
</li>
<li>
[blogurl uploads] will generate <code>http://www.yoursite.com/wp-content/uploads/</code>
</li>
<li>
[blogurl uploads noslash] will generate <code>http://www.yoursite.com/wp-content/uploads</code>
</li>
<li>
[posturl id=375] will generate the correct permalink for the post with an ID of 375; for example, <a href=”[posturl id=375]”>post about this plugin</a> would generate <a href="http://www.theblog.ca/blog-url-shortcodes" title="From Peter's Useful Crap" rel="nofollow ugc">post about this plugin</a>
</li>
<li>
[templateurl] will generate the URL to your parent theme’s root
</li>
<li>
[childtemplateurl] will generate the URL to your child theme’s root
</li>
</ul>
<h4>Requirements</h4>
<ul>
<li>WordPress 2.6 or higher</li>
</ul>

Peter’s Blog URL Shortcodes

Great job on this one, was looking some time for similiar plugin. Hope you keep it updated.



Simple and easy to use

Use shortcodes for blog URLs, post URLs, and template URLs so that your posts always have the correct internal links.

Self Shortener vs Peter’s Blog URL Shortcodes