Stairways Software today announced the release of Interarchy 7.3, the latest version of its powerful, flexible, award-winning Internet application for Mac OS X. Version 7.3 “primarily includes structural changes, completing the long transition to Mac OS X – the last vestiges of Open Transport have been eliminated, localized files are all plist or nibs, only the AppleEvent terminology remains in the resource file,” notes Stairways. Interarchy 7.3 is priced at US$39, and is a free upgrade for all Interarchy 7 owners.