This page provides information for the command line version of iPSORT, which was written in the OCaml language.

You may download and use iPSORT free of charge for non-commercial use, provided that you register and get a license key.
Now caml-iPSORT is available without registration and a license key.

Please read the non-commercial license agreement carefully. The executable is downloadable here: Linux version, Mac OS X (10.5), Mac OS X (10.6)

ipsort is linked against part of the OCaml standard library (copyright INRIA, licensed under LGPL but with special exceptions on linking).