NetworkView 3.51 (by NetworkView Software)
NetworkView is a compact network discovery and management tool

NetworkView 3.51 (by NetworkView Software)
NetworkView is a compact network discovery and management tool

FreeSnmp 1.3 (by Nsasoft LLC.)
Free SNMP scans the network and identifies the nodes running SNMP service.

ipPulse 1.65 (by Northwest Performance Software, Inc.)
Monitor network devices and notify of problems via email, pager, web, logs

AdRem SNMP Manager 1.0 (by AdRem Software)
Enterprise-class console for full-fledged SNMP control of remote network devices

Adventnet SNMP API .NET 4 (by Adventnet Inc.)
AdventNet SNMP API .NET offers a comprehensive toolkit for SNMP-based networks.

Adventnet SNMP Utilities 4 (by Adventnet Inc.)
AdventNet SNMP Utilities offers a comprehensive toolkit for SNMP-based networks.

LoriotPro Free Edition 4.0 (by LUTEUS)
Powerful graphical Windows-based SNMP manager.

AdventNet SNMP API - Free Edition 4 (by Adventnet)
AdventNet offers a comprehensive development toolkit for SNMP-based networks.

SoftPerfect Network Scanner 2.8 (by SoftPerfect Research)
A free multithreaded IP,SNMP,NetBIOS scanner. Can detect hidden shares on a LAN.

AdventNet SNMP API - Free Edition 4 (by Adventnet)
AdventNet offers a comprehensive development toolkit for SNMP-based networks.

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.