Upscribe - Embeddable lead generation forms for Medium
BioLinky - Yet another link tool? Yeah.. But better, and totally free!
Marvel Embeds - Embed interactive prototypes on any site (including Medium!)
Sayable - It allows you to send a link with an easy to remember phrase
Refined Medium - Chrome & Firefox extension that removes clutter on Medium
LinkHuddle - Make your links more appealing and organized