TCP Spy 2.13 (by Westbrook Software)
Displays all socket calls that an application makes and transferred data

TCP Viewer 2.82 (by Westbrook Software)
Captures data that is transferred between client processes and a server process

Roll Call 3.15 (by Westbrook Software)
An employee in and out board and a secure instant messaging system.

TCP Spy 2.13 (by Westbrook Software)
Displays all socket calls that an application makes and transferred data

Socket Workbench 3.1 (by tcpIQ / Sigma Solutions)
Socket Workbench is the definitive tool for analysing socket communications.

SSLSocket Wizard ActiveX 3.0 (by Seekford Solutions, inc)
Use SSL Communications channel in your application.

FlashChat Java Socket Server Source 1.0.0 (by TUFaT.com)
FlashChat Java Socket Server Source

Chilkat SSL COM Component 3.0.0 (by Chilkat Software, Inc.)
free COM component for easy SSL/TLS communication over TCP socket

ActiveSocket Network Communication Toolkit 2.1 (by ActiveXperts Software)
Enhance applications or scripts with network socket communciations capabilities

ActiveSocket Network Communication Toolkit 2.1 (by ActiveXperts Software)
Enhance applications or scripts with network socket communciations capabilities

Easy Control 2.0 (by Cosmin Buhu)
Script based serial/TCP/IP communication software and virtual instrumentation

Serial Port Redirector 1.4 (by FabulaTech, Inc.)
Let your serial applications operate via TCP/IP networks

Proxy Workbench 1.2 (by tcpIQ / Sigma Solutions)
Proxy Workbench is a unique proxy server that displays its data in real-time.

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.