Monitoring your backend server
Author: yoge
Some times your backend server will fail but the web server will be running fine. In this case just monitoring port 80 of your website wont be sufficient.
SMS Notification from Site24x7
Author: yoge
SMS Notification is supported in Site24x7 and is fully free upto 10 SMS per month.
Website Monitoring Service
Author: Gibu
Site24x7 is a hosted web site monitoring service that can help you ensure your websites are up and running fine.