Kutt.it - Kutt.it is a free and open source URL shortener with custom domains and stats.
Piano.io - Piano is the Analytics and Activation Platform that helps you understand and influence customer behavior.
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.
Poplink - Customise every aspect of the links you share.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.