TheOne Computer Inventory Free Edition 1.5.1 (by TheOne Software Corporation Limited)
TheOne Computer Inventory Free Edition can gather software and hardware info.

TheOne Server Monitor Pro 2.5.0 (by TheOne Software Corporation Limited)
TheOne Server Monitor Pro can monitor Website, Email, Database, Network & Server

TheOne SysLog Manager Pro 2.5.0 (by TheOne Software Corporation Limited)
Syslog Manager is a syslog server which can receive, display and forward syslog.

TheOne SysLog Manager Lite 2.5.0 (by TheOne Software Corporation Limited)
Syslog Manager is a syslog server which can receive, display and forward syslog.

TheOne SysLog Sender Free Edition 2.1.0 (by TheOne Software Corporation Limited)
TheOne Syslog Sender Free Edition is a Free Syslog Tool to send syslog message

TheOne Server Monitor Lite 2.5.0 (by TheOne Software Corporation Limited)
TheOne Server Monitor can monitor Website, Email, Database, Network & Server

TheOne Server Monitor Pro 2.5.0 (by TheOne Software Corporation Limited)
TheOne Server Monitor Pro can monitor Website, Email, Database, Network & Server

A1Monitor Network Monitor TCP or Web 6.1.70 (by A1Tech, Inc.)
Monitor multiple web or TCP servers (http, https, ftp, pop3 etc.)

A1Monitor Network Monitor TCP or Web 6.1.70 (by A1Tech, Inc.)
Monitor multiple web or TCP servers (http, https, ftp, pop3 etc.)

NTP Server Monitor 1.0.001 (by ntp time server)
Allows any number of NTP time servers to be constantly monitored

DEKSI Network Monitor 4.8.2 (by DEK Software International)
An advanced, powerful, and feature rich network Monitor

IsItUp Network Monitor 4.9.8.1 (by Taro Software Inc.)
IsItUp network monitor for servers, ports, websites, email w/ alerts & graphs

Simple Server Monitor 1.2.2 (by Cuda Incorporated)
An easy to use server monitoring tool. Monitor your servers from your desktop.

PA Server Monitor Free Edition 3.2.19 (by Power Admin LLC)
Monitors Windows event log, web pages, and ping response

IPCheck Server Monitor 5.3.1.586 (by Paessler AG)
Server Uptime/Downtime Monitor - alerts staff if a server or network is down

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.