1)   A1Monitor Network Monitor TCP or Web 6.1.70
Monitor multiple web or TCP servers (http, https, ftp, pop3 etc.) Receive email notification by email or pager if any can't be reached a number of times in a row
network monitor, monitoring, software, ping, tcp, ftp, pop3, http, smtp, web server monitor,

 2)   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.
web server monitor, server monitoring, web page monitor, event log monitor, ping monitor, reboot server,

 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.
server monitor, server monitoring software, network monitor, network monitoring, network monitoring software, web server monitor, server monitoring tool,