1)   Advanced Host Monitor 6.10
HostMonitor is a system management tool that continuously monitors servers availability and performance. It has 57 test methods, 28 alert methods, highly flexible report and log manager. Package includes Log Analyzer, Web Service and other utilities.

 2)   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.

 3)   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.

 4)   AlertPing 2.7.6
While your hosts are hanging-up,your income is falling. Stop it with "AlertPing"! Alert Ping verifies accessibility of your host computers! It is used for 'pinging' IPs, f.e. computers in your local area network or in the internet.

 5)   EverWatch Server Monitor 1.0
Freeware program to continuously monitor your web server's (or any other server's) up and down time. User-defined polling interval and detailed logging and performance statistics.

 6)   Website Monitoring Expert 4.5.8
Website Monitoring Expert is a multithreaded website monitoring tool, watching different protocols, including HTTP(S), SMTP, POP3, FTP, TCP. It can log the server performance, generate real-time reports, and notify you upon detection of problem or error.