Fast URL Shortener - Simple and fast tool to create a shortened URL making it easy to remember and share.
Shorten.REST - A URL shortener API you can depend on
Zero Width Shortener - Shorten URLs with zero-width characters
TinyURL - Are you sick of posting URLs in emails only to have it break when sent causing the recipient to...
Pixela - Record and Track your habits or effort. All by API.
W3 URL Shortener - Decentralized, fast and free URL shortener