We might try the uptime monitoring service for our websites or blogs like Pingdom, SiteUptime or AreMySitesUp before. Uptime Robot is a new free website monitoring service that founded by WebResourcesDepot and SSLmatic. Uptime Robot monitors your websites every 5 minutes interval and alerts you if the website is unavailable instantly. It allows you to monitor up to 50 websites and alerts can be received via email or SMS (Twitter and RSS are coming soon). You can add multiple alert contacts to notify multiple users in case of a downtime. It is possible to monitor both http and https addresses which is pretty important to check if the SSL certificate installed functions correctly. Uptime Robot also has a simple fully Ajaxed interface for a faster usage.

• http://www.uptimerobot.com/