This software is provided as is. I take no responsibility for anything that happens once you download it. I have not had any serious problems with it, but that is not to say you will not. It is not commercial, shareware, or freeware. I invite you to download it, play with it, modify it, hack it, whatever. But please only link to my page and do not put any of my executables or source code directly on your website.
Executables
Compiled for Unix - link to newest and old versions of executables compiled on SGI graphic workstation running Irix
Source Code
Sorry, due to legality issues of the NCSA I can't put source code up for download on their webspace.
However if you really want my source code you can email and I'll probably send it to you.