redet

 What: Redet
 Where: http://freshmeat.net/projects/redet/
        http://billposer.org/Software/redet.html
 Description: Redet (Regular Expression Development and Execution Tool)
              is a tool for developing and executing regular expressions
              using any of more than 50 search programs, editors, and
              programming languages. Makes use of Tk-Aqua on MacOS X.
 Currently at version 8.24.
 Updated: 2008-03-13.
 Contact: Bill Poser ([email protected])

http://www.billposer.org/Software/Images/RedetOverview.jpg