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.

joshbuchea

Perform a 301 redirect from an uppercase URL to the lowercase version for all non-admin URLs (that do not include a filename).
Please help by reporting any bugs or feature requests at the link below.
Bugs:
<ul>
<li>Report at: <a href="https://github.com/joshbuchea/wp-force-lowercase-urls/issues" rel="nofollow ugc">Github Issue Tracker</a></li>
</ul>
Questions/Comments:
<ul>
<li>http://joshbuchea.com/</li>
</ul>

WP Force Lowercase URLs

Perform a 301 redirect from an uppercase URL to the lowercase version for all non-admin URLs

Self Shortener vs WP Force Lowercase URLs