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tinu.be's answer:
All features are totally free.
I'm using to shorten my company urls, and looks great. I can shorten and customize the url name for free, this is awesome.
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.
Kutt.it - Kutt.it is a free and open source URL shortener with custom domains and stats.
TinyURL - Are you sick of posting URLs in emails only to have it break when sent causing the recipient to...
is.gd - Is.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
T.LY - The best link management service to track, brand, and share short URLs in one simple click