We do not have a download file for the latest version (4.3.1), but you can try downloading it from the developer's site
Download version 3.0.1 from Mac Informer
Version: 3.0.1
Date update: Feb 28, 2013
File name: geppetto-macosx.cocoa.x86_64-3.0.0-r201209231713.zip
Size: 76.6 MB