Show or Hide SharePoint 2010 ribbon based on SharePoint Groups, will allow site administrator to define who can or cannot see the SharePoint ribbon.
With this solution you can on each site define if the ribbon is display or not for :
1. Everyone
2. Anonymous user
3. for one or many specific SharePoint groups

Installation:
stsadm -o addsolution -filename PATH\ConsultPoint.SharePoint.RibbonVisibility.wsp
stsadm -o deploysolution -name ConsultPoint.SharePoint.RibbonVisibility.wsp -allowgacdeployment -immediate
Activate the feature named ConsultPoint.SharePoint.RibbonVisibility on your site collection

Requirements:
* SharePoint

The license of this software is Free, you can free download and free use this server utility software.