WebGazer is an uptime monitoring platform that checks if your website is up as it should be and notifies you if anything goes wrong
cointop - An interactive terminal app for tracking cryptocurrencies
UptimeRobot - Free Website Uptime Monitoring
CryptoLogg - Shows price change of crypto since the last time you checked
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.
Crypto Hub - View charts and summarize your crypto trading, in one page
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring