Site 24×7

5. Site 24×7

Site24x7 Free Uptime Monitoring Service (image credit – site24x7.com)

Site24x7 offers free uptime monitoring services with website, network, server, port and FTP monitoring and testing SSL certificate expiry. You can monitor five basic websites from one location. The monitoring is done every 10 minutes as per the free plan.

You can always upgrade to paid plans for advanced features.

Pingdom

3. Pingdom

Pingdom Free Uptime Monitoring Service (image credit – pingdom.com)

Pingdom offers free uptime monitoring of one website for free. You get unlimited email alerts and 20 SMS alerts. You also receive a monthly uptime report for your website along with percentage of uptime.

For more features you can take a look at their paid plans.

Monitor.us

2. Monitor.us

Monitor.us Free Uptime Monitoring Service (image credit monitor.us)

Monitor.us carries out free uptime monitoring that is easily customizable and has a list of interesting and useful features. This tool not only helps you monitor your site’s uptime, but also lets you monitor your network and server performance and page load time. It sends you alerts via SMS and emails and to your Android and iOS devices with its mobile monitoring service.