You have so many features using this URL shortener. You also don't need to register to use all feature. Best is to configure your shurt URL with a passwort or set a limit how often it can be called. So you have a very good protection to it.
QUnit - What is QUnit? QUnit is a powerful, easy-to-use JavaScript unit testing framework. It's used by the jQuery, jQuery UI and jQuery Mobile projects and is capable of testing any generic JavaScript code, including itself!
shorturl.is - Make long url's short. Statistics included!
Ava - Making conversations accessible for the deaf
Capsulink - Capsulink is a URL shortener that gives you the key tools you need to optimize your content and marketing strategies.
Chai - Chai is a BDD / TDD assertion library for node and the browser that can be delightfully paired with any javascript testing framework.
ShrtFly - ShrtFly is one of the best URL shorteners, They offer Higher Payout Rates on Norway and United States Country.