IPCheck Server Monitor allows you to monitor your server(s) and be notified via email when they are down. The interface is browser based and provides a detailed overview with statistics on each of the monitored devices. IPCheck Server Monitor supports a variety of web services, including PING, HTTP, SQL, Disk Space, DNS and others. It can alert you via email, network broadcast, HTTP post, software execution or sound notification in the event that a device becomes unavailable. The free version is limited to 5 devices and limits checking intervals to 15 minutes.

The license of this software is Freeware, you can free download and free use this server monitoring software.