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

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

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

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

Eltima RS232 Data Logger 2.7 (by ELTIMA Software GmbH)
Redirect communication data from any serial port into a text file and analyze it

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

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

COM Port Toolkit 3.8 (by Michael Golikov)
Software solution for monitoring serial port activity on Win32 PCs.

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

Serial Port Sniffer ActiveX Control 1.0 (by ELTIMA GmbH)
Serial Port Sniffer ActveX Control monitors and edits data flows of serial ports

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.