For documentation, code analysis, performance profiling, bug profiling, etc.
Doxygen-generated documentation for OpenCog are found at http://docs.opencog.org/
Generate a local copy from the command line with make doxygen (files are dropped into the doc/html directory within the cmake build directory).
More about doxygen at wikipedia:doxygen
C and C++ Code Counter http://cccc.sourceforge.net/
placeholder for wikipedia:valgrind
placeholder for GNU profiler wikipedia:gprof
placeholder for sysprof http://www.daimi.au.dk/~sandmann/sysprof/