C++ lint is a free tool to check the C++ source code to analyze it for syntax errors and other faults which effectively take a lot of hassle off the C++ programmer's mind
Right now, C++ lint is in its very infant stages. I am still in major planning work to effectively deal with the complexities of the C++ grammar on top of my studies. I don't anticipate a release any time soon; however, that is all dependant on how my schedule changes.
Right now, I have released a very limited version on the parser to the general public. It can be found in a gzipped tarball at:
http://sourceforge.net/project/showfiles.php?group_id=146851&package_id=163046
If you are at all interested in this project, please continue to watch it update. I would appreciate any and all comments.