YOURLS - YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.

NxgtUrl - Free Custom Short URL, Custom Domain Short URL, Unlimited Domain short url, NXGT Custom URL,Nxgt Short URL, Nxgt Custom domain short url

Lstu - A nice and open source url shortener. You can use it as service or install it on your own server.

TinyURL - Are you sick of posting URLs in emails only to have it break when sent causing the recipient to...

Anonymous URL Shortener - Anonymous URL Shortener, Referer, Anonymizer, Redirection service.

Doiop - Most of the web addresses that are called as URLs also are too long and complicated that these decrease the real potential of the message carrying these URLs because these really irritate the users.