Gumroad - An all-in-one solution to sell your work and grow your audience.
Kutt.it - Kutt.it is a free and open source URL shortener with custom domains and stats.
Payhip - Sell digital downloads, courses, coaching, and more from one simple platform.
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.
Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.