Official versions are located at:  http://www.modelsphere.org/download.html

 
Current Version (3.1) (stable)

 Open ModelSphere is deployed in three formats.
 
Open ModelSphere 3.1 with Windows Installer
Build 912 - Size: 21 Megs
This format is an executable file that extracts and installs itself.  This is the appropriate format for the majority of Windows users. 

 
Open ModelSphere 3.1 compressed
Build 912 - Size: 24 Megs
The compressed format is appropriate for non-Windows users, and/or for advanded users. 

 
Open ModelSphere 3.1 with Webstart (beta)
http://kenai.com/downloads/modelsphere/launch-ws.html
Launched from the browser. The simplest way to launch. Still experimental.

 
Archives 

 
Open ModelSphere 3.0 with Windows Installer
Build 904 - Size: 24 Megs
This format is an executable file that extracts and installs itself.  This is the appropriate format for the majority of Windows users.