Understand for C++
(commercial) a reverse engineering, documentation and metrics tool for C and C++ source code. It offers code navigation using a detailed cross reference, a syntax colorizing "smart" editor, and a variety of graphical reverse engineering views
The unifdef utility selectively processes conditional C preprocessor #if and #ifdef directives. It removes from a file both the directives and the additional text that they delimit, while otherwise leaving the file alone.
a unit testing framework for programmers using Oracle's PL/SQL language
a graphical file comparator and merge tool
Yasca looks for security vulnerabilities, code-quality, performance, and conformance to best practices in program source code.