Bitcoin Flip - Trading Simulator for all the popular crypto currencies.
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.
Roostoo - Simulated crypto exchange and mock trading competitions
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Dojla - Buy, sell, convert & learn to trade top cryptocurrencies
Better Uptime - We call you when your website goes down