Short.io - Short.io makes short links (vanity urls) on your own domain. Free signup, analytics and API. Chrome, slack, zapier and segment integrations.
cmpct.io - The shorter, safer, more useful link shortener
Ji.Hn - Shorten your links, track, target or rotate them
Hope.ly - Shorten a link to help those in need
MailTumble - MailTumble is a service that tokenises email addresses, allowing you to share your lists with third parties.
Trotto - Open-source internal URL shortener for teams, up in minutes