Eltima Serial Port Monitor 1.2 (by ELTIMA Software GmbH)
Serial Port Monitor for professional RS232/422/485 COM ports monitoring.

Serial Port ActiveX Control 2.5 (by ELTIMA Software GmbH)
Serial Port component for communication with external devices.

Look RS232 4.3 (by fCoder Group)
Look RS232 is a monitor for debugging serial data transfers between devices

Serial Port Monitoring Control 1.03 (by HHD Software)
Serial Port Monitoring Control Component Library (SPMC)

Serial Port Redirector 1.4.13 (by FabulaTech, Inc.)
Let your serial applications operate via TCP/IP networks

Free Serial Port Monitor 3.31 (by HHD Software)
Free Serial Port Monitor, RS232 Com Software Sniffer and Communication Analyzer

Serial Port Monitor ActiveX 3.0 (by ELTIMA Software GmbH)
Detect serial port activity in a system with Serial Port Monitor ActiveX Control

Network Serial Port Kit 5.3.2 (by FabulaTech, Inc.)
Allows you to connect any serial port devices over TCP/IP network or Internet

Bill Serial Port Monitor 3.0S (by SYMCOD INC)
No physical cable is required (Spy COMM Sniffer monitor and debug)

Virtual Serial Port Control 2.3 (by FabulaTech, Inc.)
Creates virtual serial ports to which any serial application can connect

Tail4Win 2.7 (by Withdata Software)
a windows port of the UNIX 'tail -f' command. monitor changes to file

PE Explorer 1.98 R5 (by Heaventools Software)
DLL viewer, resource editor, win32 PE disassembler, and dependency scanner.

Serial Monitor 4.10 (by HHD Software)
Software serial port monitor Rs232 com sniffer with protocol logger and analyzer

vTest 1.1 (by Verisium, Inc.)
vTest is an automated functional & regression testing tool for web applications

Deleaker Add-in for Visual C++ 1.2.9 (by Softanics)
Deleaker: an effective solution to the problem of detecting program leaks.