1)   Atomic Watch 1.01
Website Downtime = Lost Revenue Watch your website to ensure you minimize downtime and maximize uptime. If your website is down, search engines may remove your site, partners may remove links to your site, ensure your site is up at all times.

 2)   ServerSweep Professional 1.5
ServerSweep Professional has been designed from the ground up by experienced Microsoft Windows NT / 2000 Server support engineers and consultants to provide the very best in Microsoft Server Monitoring.

 3)   Server Nanny Network Monitor 4.0.0
Reduce downtime and be the first to know when a server or network device fails. The last time you had a network or server failure how long was it before the problem was discovered? Don't wait for employees or customers to report the problem.