IonPanel 0.23 and 0.27 were prototypes, based upon the v76 Content Management System, but the code was rewritten and replaced by early 2002. Instead a new from-scratch design was developed, with help from other developers, and influences from both SACMS and GF-admin. The first release was in August 2002, and IonPanel soon attracted a loyal following. IonPanel was a strictly open source, free application.
Development has since been discontinued.