iPad URL is a web service that primarily acts as a URL shortening tool. It provides you with a bookmarklet to add to your bookmarks toolbar. Whenever you are on a long-URL page, simply click on the bookmarklet and a shortened URL will be generated.
Untiny.me is a service to get the original URL of a shortened one. This is useful in case you need to know where the link will take you, or if the URL shortening service is blocked by a certain proxy, a case many users face in certain countries. It is not a proxy breaker.
Adf.ly is an URL shortening service, such as bit.ly and goo.gl but with one little twist, you can make money from every link you create. When ever someone opens the short url there is a 5 second frame which shows an ad. The timing is short and majority of the people using this service.

URLy – the URL sharer is a highly customizable and easy to use URL shortening and image / file sharing app for Android phones. You can shorten URLs, upload files and send messages to Twitter. It also functions as a plug-in for Twigee and Twicca to upload files and shorten URLs.

Google launched g.co – a new URL shortener that will link only to Google products and services. Google took over g.co domain to use it to send you only to webpages that are owned by Google, and only google can create g.co shortcuts. Google already owns goo.gl, a public URL shortener.