Premium plan available starting from $3.25/month for 5 URLs with 10 minutes checking interval.

With their free plan you can have 2 URLs with 30 minutes monitoring interval each. Just like many other services, Host-tracker also provides free uptime monitoring plan. “ be the first to know when your website is down,” that’s their main slogan. They offer website monitoring, network monitoring, full-page load monitoring, server monitoring and mobile monitoring. Setup in just 3 minutes and discover the free monitoring tools at your disposal. No gimmicks, no contracts, no charge to you. Monitor.Us is feature-rich, cloud-based service that monitors IT systems of all sizes from an easy-to-use, all-in one dashboard. It is the free version of Monitis and it is built by the same company as TeamViewer. First because it is free ( there is no paid plan in fact) and secondly because you can have 50 checks ( that means 50 websites/servers to monitor) and each checked every 5 minutes, the shortest interval ever available for free service. But there is a free plan that lets you monitor one website/server and includes Real User Monitoring. Cheapest plan or their premium plans is available for $6.96 allowing you to have 10 checks plus 20 sms alerts per month. Pingdom is not just a web app providing uptime monitoring service but also other useful tools like website speed test, DNS health checker, ping and traceroute. Let’s start the list with the one that I think the best of all other, meet Pingdom.

Uptime robot