1)   PA Server Monitor 3.4 PA Server Monitor is a Windows service that monitors the health and availability of Windows servers, network services (on Windows, Linux and other operating systems), and devices. No agents are needed to monitor remote servers. Rich reporting too. 2)   Ping Monitor Tool : SuperPinger 2.12 SuperPinger is a powerful enterprise graphic ping monitor tool . It is able to detect thousands of IP equipments simultaneously and send message when states of some equipments change , it could also adopt necessary steps to deal with troubles. 3)   Quick Ping Monitor 2.61 A powerful simultaneous ip monitor tool . It is able to monitor thousands of IP equipments simultaneously and send message and mail when states of some equipments change , it could also adopt necessary steps to deal with troubles. 4)   PA Server Monitor Free Edition 3.1.9 PA Server Monitor has powerful features that are very simple to setup. The Free edition monitors web pages, ping response and the Windows event log, and includes several response actions such as email, reboot, etc. Monitored resource reports too.