ShoutKey - ShoutKey is the temporary URL shortener that gives you a randomly chosen English word as the key...
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.
Kifi - bookmarks made social
Lessn More - Lessn More is a fork of Lessn with support for more types of short URLs than Lessn supported;...
AdHype - The best link shortening service.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.