Here at the Bouncy Castle, we believe in encryption. We believe so strongly in encryption, that we ve gone to the effort to provide some for everybody.
Cobertura is a free Java tool that calculates the percentage of code accessed by tests. It can be used to identify which parts of your Java program are lacking test coverage. It is based on jcoverage.
Calculates various metrics for projects, packages and compilation units. Includes both simple counts like lines of code as well as more complex metrics such as the McCabe cyclomatic complexity.
This tool is designed to beautify PHP code, applying most of the PEAR standard requirements to it. It can even process really scrambled scripts, e.g. all code in one line, and thus may help you to get scripts into a more readable form.
T. Omori, and K. Maruyama. MSR '08: Proceedings of the 2008 international workshop on Mining software repositories, page 31--34. New York, NY, USA, ACM, (May 2008)