1)   Serverwatch PRO 3.00
Serverwatch has been under heavy influence ( and still is ) by it's devoted users, making it more and more powerfull after each release. This easy of use application is non expensive and easy way to monitor your entire network from a single console.

 2)   B4Failure 4.50
B4Failure IP, Network and Server Monitoring software is a centralizied Windows suite, designed to monitor every aspect of your infratructure. The most comprehensive IP, Network and service monitor for your infrastructure ever.