The program Greebles is not currently supported. You can get a copy of the last version from our Archive site.
We have no current plans to develop this program further, however it is my desire to update it for Mac OS X and/or iOS one day. This may or may not ever happen.
Greebles requires a serial number, but you can no longer purchase these serial numbers. So if you need a serial number, please email me and I will give you some.