Deleaker: a new add-in for Visual C (VS 2003-2005) easily detects resource/memory leaks, localizes them in the source code and is tightly integrated into the Visual Studio development environment.

PE Explorer makes it easy to view, analyze and edit win32 executable files (EXE, DLL, SYS, ActiveX). Offers easy-to-use tools such as a Visual Resource Editor, powerful Win32 Disassembler, DLL Export Viewer, UPX and Upack Unpackers, and more.
Serial Monitor Device Monitoring Studio

Software serial port monitor Rs232 sniffer with protocol analyzer and packet data logger. This monitoring utility can spy, capture, view, log, analyze test com ports activity performing com port connection and traffic analysis with data acquisition
Bug Trail Personal

Capture and track all your software bugs with Bug Trail. Attach screenshots, automatically capture system parameters and create well formatted MS-WORD and HTML output reports. Available both in personal and Workgroup versions.