Ji.Hn - Shorten your links, track, target or rotate them
Shorten.REST - A URL shortener API you can depend on
Trotto - Open-source internal URL shortener for teams, up in minutes
PixelMe - URL shortener for savvy marketers
Redirect 2 Link - Redirect 2 Link allows you to securely share links while being able to control the social preview.
Pixela - Record and Track your habits or effort. All by API.