Enter a tone row, either in numbers (0-11) or in musical
notation (Ab, C#, E, etc.).
Do not use double flats, double sharps, etc., but enharmonic
spellings are ok (i.e. D# or Eb).
Then click "Convert it!" and the row will be converted to all of its permutations in matrix form.
This script was written by Dan Cavanagh. I found it through Ask Jeeves. The page was taken down, and I was able to save a copy of the original source code. I uploaded and edited that to Nybbles' Web Site. I hope this works for you, it did for me.