AdaControl is a free (GMGPL) tool that detects the use of various kinds of constructs in Ada programs.

Its first goal is to control proper usage of style or programming rules, but it can also be used as a powerful tool to search for use (or non-use) of various forms of programming styles or design patterns.
Searched elements range from very simple, like the occurrence of certaine entities, declarations, or statements, to very sophisticated, like verifying that certain programming patterns are being obeyed..

With the help of Pascal Pignard, we have now a MacOS binary of our current AdaControl