The Object-Role Modeling (ORM) standard version 2, associated schemas and generation tools, and a reference implementation in the form of the Natural Object-Role Modeling Architect for Visual Studio (NORMA) product.
Stopwatch is a simple, highly extensible, API that alows monitoring of any part of the application. It reports hits, execution times and load but can be extended to do more via custom engines. It is able to persist data in "in-memory" or real database.
An Extensible memory leakage detection system which can be turn on/off just including or not a C header
DoxyChange is an extension of Doxygen which provides a mechanism to display changes in SVG/HTML/UML format between two revisions of a given software system.