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RATS and YASCA (with dependencies) are pretty good.. Any other free tools?
RATS is in version 1.1, YASCA (http://www.scovetta.com/yasca.html )and RIPS
(https://sourceforge.net/projects/rips-scanner/) are still good candidates
RIPS and Pixy for PHP seem to be useful.
Strangely I've had Pixy standalone find things Pixy in YASCA doesn't. Need more testing ;-)