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.
Capsulink - Capsulink is a URL shortener that gives you the key tools you need to optimize your content and marketing strategies.
Anonymous URL Shortener - Anonymous URL Shortener, Referer, Anonymizer, Redirection service.
shorturl.is - Make long url's short. Statistics included!
Lstu - A nice and open source url shortener. You can use it as service or install it on your own server.
Linkvertise - Share links and earn money on every visitor who clicks on your link