Upscribe - Embeddable lead generation forms for Medium
Online timer - Online timer is a free and easy-to-use tool that comes with a very simple way to get done with measuring time and alarm.
Marvel Embeds - Embed interactive prototypes on any site (including Medium!)
Timer Tab - Online countdown timer, alarm clock, and stopwatch.
Refined Medium - Chrome & Firefox extension that removes clutter on Medium
Gestimer - For those little reminders during the day