Advanced Network Monitor will test your website or IP, accurately detecting website errors and downtime within seconds. As soon as an error is detected, a notification email will be sent to you, with a description of the error. If your website or service goes down, Advanced Network Monitor will immediately notify your distribution list and email a report for your reference. Many times an individual website or service can go down without the whole server failing and will be undetectable by the hosting service provider.

Ссылка: http://www.micr..ceNetworkMonitor/ANM.exe