1)   Advanced Host Monitor 7.20
HostMonitor is a system management tool that continuously monitors servers availability and performance. It has 60 test methods, 30 alert methods, highly flexible report and log manager. Package includes Log Analyzer, Web Service and other utilities.
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 2)   Radar Website Monitor 4.6.1.7
Radar Website Monitor 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.
website monitor, website monitoring, website performance, host monitor, server monitor,

 3)   DEKSI Network Analyzer 6.2
An advanced, powerful, and feature rich network mapping, monitoring, management, and administration software solution.
network monitor, server monitor, network traffic monitor, network bandwidth monitor, network server software, network administration, networking, network management, LAN monitor, host monitor,

 4)   AlertPingPro 2.7.8
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.
Ping, Net Monitor, Host Monitor, AlertPing,