NetGong 5.9 (by Tsarfin Computing Ltd)
Monitor connectivity and device availability of your network.

NetInfo 5.9 (by Tsarfin Computing Ltd)
Isolate faults and simplify processing of diagnostic data.

NetGong 5.9 (by Tsarfin Computing Ltd)
Monitor connectivity and device availability of your network.

sMonitor 4.1 Build (by Alexander Yarovy)
Monitors networked computers and TCP/IP services running on them continuously.

ipMonitor (registered) 8.5 (by ipMonitor Corporation)
Monitor, Alert & Recover critical applications and network infrastructure equip.

IPSentry Network Monitoring Suite 4.7.0 (by RGE, Inc.)
Monitor your network and its devices to receive notifications for problems.

IPSentry Network Monitoring Suite 5.0.20 (by RGE, Inc.)
Monitor your network and its devices to receive notifications for problems.

Net Check 1.1.0 (by SoftHunters)
An easy solution to check if there is an active Internet connection.

Server Nanny Network Monitor 4.0.0 (by Xenos Software LLC)
Reduce downtime and be the first to know when a server or network device fails.

NWM NETWORK MONITOR 6.1.02131 (by NET WORK MONITOR)
Netvizor- A Network Surveillance & Monitoring Software for home or corporate use

Accurate Network Monitor 1.31 (by HHD Software)
Network Monitor - ip packet sniffing, monitoring protocol analyzer software tool

NetInfo 5.9 (by Tsarfin Computing Ltd)
Isolate faults and simplify processing of diagnostic data.

Netoscope 1.6 (by Basta Computing, Inc.)
Netoscope: Internet server monitor.

The Dude 1.1 (by MikroTik)
The Dude will layout your network on a map and will monitor services of devices

Sniff-em Packet sniffer 1.12 (by YASC LTD)
Sniff'em 1.12 is a Windows based allround Packet sniffer and Network analyzer.

SNMPTest 1.03 (by Noel Danjou)
Query and monitor any SNMP-compatible device

MailMonitor 1.6.3 (by DigiArch.org)
If you have mail problems, MailMonitor shows you what's going on at port level.