Here's a zipped copy of HexaGreat. I gave it to a friend who claimed it had a virus but he is kinda computer-illiterate and must have mistaken something cuz I have used it for years and had my Norton virus definitions up-to-date when I downloaded it.
So with that said here it is.
NOTE OF WARNING (in case I wasn't the one who suggested it on the link you mentioned- didn't take time to check it): this program is VERY buggy. It crashes sometimes when you delete a node you have created. If it crashes when you are working on that file that file will never be openable again. You can even save the same file under different names (save as chicken, save as superchicken)- any file with the same data will never be openable again.
The solution: You must export the file often in DXF format. This way you can use a safer modeling program to do more defined work. You must also make sure your model has faces applied to every polygon or your safer modeling program will have no information to import.
Even though this program is extremely buggy and you can only do symmetrical models, it is by far the easiest I have ever used. It is so intuitive and user friendly it's hard to believe it hasn't caught on more (well, I guess those killer crashes are not very popular). That's why I guess Shusaku made HexaSuper. Hope it works!
Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new. II Corinthians 5:17