Mastering Bitcoin - The Bible for Bitcoin
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.
30 Seconds of Knowledge - Become a better developer, in every new tab.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Random User-Agent - Automatically change the user agent after specified period of time to a randomly selected one, thus...
Better Uptime - We call you when your website goes down