Itiny.in URL Shortener - Free URL shortening & link management service Created by iTiny.in
Kutt.it - Kutt.it is a free and open source URL shortener with custom domains and stats.
UrlHum - The modern, privacy-aware URL shortener built with Laravel.
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.
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Anchr.io - Anchr provides you with kind of a toolbox for tiny tasks on the internet.