Uptime Robot is a great free tool to monitor your website uptime. It allows you to monitor up to 50 websites (using HTTP or HTTPS protocol), or servers (using ICMP packets), or specific services on a server. (These are called “monitors” in the site’s creators term). It will alert you by email, SMS, Twitter or post to a web hook when your site is down and up again. At work, we use Uptime Robot to monitor some important websites, which are sometimes complained of being unresponsive by our clients. It helps detect the downtime more quickly so that we can have in-time investigation.

Uptime Robot Dashboard
Uptime Robot Dashboard

We’ve used it for a while and feel totally satisfied with Uptime Robot. If tracking a site’s uptime and downtime, and being alerted when something goes wrong are what you’re looking for, then this is the tool for you. Check it out!