The regex coach is a wonderful debugger/aid tool for Perl regexes, by Dr. Edmund Weitz.

The official page is http://www.weitz.de/regex-coach/

Here you can download a copy that will run in Mac OS X 10.5+. Please note that this is not a native OS X program, but it's a Windows program installed in a self-contained Wine version.

For support: l dot gatti at trentorise dot eu