ShellReset is invaluable utility for developers of Windows Shell Extensions.
License: Shareware
OS Support: Win95,Win98,WinME,WinXP,WinNT 4.x,Windows2000,Windows2003

Bug tracking and defect tracking tool VSS integration, workflow, notifications.
License: Commercial
OS Support: Win95,Win98,WinME,WinNT 4.x,Windows2000,WinXP,Windows2003

ser232mon can monitor theRS232 COM1,2,3,.
License: Freeware
OS Support: Windows2000,WinXP,Windows2003

Serial Port Monitor, Serial Port Terminal, RS232 RS485 RS422 TTL Analyzer.
License: Shareware
OS Support: Win98,Windows2000,WinXP,Windows2003,Windows Vista Home Basic,Windows Vista Home Premium,Windows Vista Business,Windows Vista Enterprise,Windows Vista Ultimate

Free Serial Port Monitor, RS232 Com Software Sniffer and Communication Analyzer.
License: Freeware
OS Support: WinNT 4.x,WinXP,Windows2000,Windows2003

Deleaker: an effective solution to the problem of detecting program leaks.
License: Shareware
OS Support: WinXP,Windows2000,Windows2003

USB Bus and USB Device protocol analyzer and debugger, with USB traffic sniffer.
License: Shareware
OS Support: WinXP,Windows2000,Windows2003

Create virtual COM ports connected with virtual null-modem cable, share COM port.
License: Shareware
OS Support: WinXP,Windows2000,Windows2003

EXE and DLL viewer, resource editor, win32 disassembler, and dependency checker.
License: Shareware
OS Support: Win95,Win98,WinNT 4.x,Windows2000,WinXP,Windows2003,Windows Vista Business,Windows Vista Ultimate

SmartInspect is a logging tool for debugging NET, Java and Delphi applications.
License: Commercial
OS Support: WinXP,Windows2000,Windows2003,Windows Tablet PC Edition 2005,Windows Media Center Edition 2005,Windows Vista Starter,Windows Vista Home Basic,Windows Vista Home Premium,Windows Vista Business,Windows Vista Enterprise,Windows Vista Ultimate,Windows Vista H