Markdown to PDF - Super simple way to get your markdown files to PDF
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Markdown Here - Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render...
Simple Ops - Simplify website performance and uptime monitoring with alerting, ssl check, chrome ux metrics, multi locations
Mochi - Write notes and flashcards with Markdown and study them with spaced repetition.
UptimeRobot - Free Website Uptime Monitoring