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.
SmartBribe - Get free traffic to your site (turn one visitor into three)
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Dibz - Put your link building efforts on autopilot
Ow.ly - Shorten links, measure traffic, and demonstrate social ROI right inside the Hootsuite dashboard.
Shortlist Metrics - A simple tool to help you scale your link building faster