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.
Bitly - Get the most out of your social and online marketing efforts. Own, understand and activate your best audience through the power of the link with Bitly Enterprise.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Rebrandly - Rebrandly is the easiest way to create, share and manage branded links.
Tiny.cc - Changes a big URL into tiny URL. With link editing, detailed click statistics, QR Codes and Custom Domains.Info · Example · Help · Tinycc Blog – Branding .
RocketLink - Rocketlink helps to grow your audience with URL shortener that allows firing retargeting scripts when the link is clicked.