Alcamy - Free, open self-learning platform. Learn & teach anything.
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Airschool - Airschool is a live-streaming educational platform with engagement and monetization tools to help anyone start teaching online. It can be finance, business, wellness, meditation, branding, marketing; in short, anything you want!
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Stacks - A bookshelf for your online courses
Better Uptime - We call you when your website goes down