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.
Archive.md - archive.is allows you to create a copy of a webpage that will always be up even if the original link is down
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.
Wayback Machine - Browse through over 150 billion web pages archived from 1996 to a few months ago.
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 .
Perma.cc - Perma.