Julio Potier

AutoShortener can create short links in your WordPress website for your posts and pages but also for external links. 
You got many many great options, a usefull admin panel, bookmarklets, shorcodes. 
But easy to use ! Visit website www.autoshort.com for more informations.

BAW AutoShortener

AutoShortener can create short links in your WordPress website for your posts and pages but also for external links.

netandreus

This plugin adds ability to create short URL from the blog post permalink and stores it in the database. The plugin currently use tok.pw as the only service and stores the data in the database of tok.pw.
Plugin homepage: http://tokarchuk.ru/2013/03/tok-pw/
For support use WordPress.org or this page: http://tokarchuk.ru/2013/03/tok-pw/
Thanks!

tokpw Short URLs

Automatically shortens the blog post URL via tok.pw.

BAW AutoShortener vs tokpw Short URLs