JrDebugLogger
JrDebugLogger is a C++ Programmer's Toolkit. It consists of a set of Open Source, Cross Platform header files for C++ that you can add to your applications in order to support advanced debug-logging, and an optional Microsoft Windows application for capturing debug messages in real time and allowing you to view/sort/search them in an efficient manner.
It's listed under Mouser's Software in the Download section:
http://www.donationcoder.com/Software/Mouser/jrdebuglogger/index.html
NOTE: this is not a program for end users - it's a toolkit for C++ Programmers, so most people will not have any use for it.