MacMainFrame enables Apple Macintosh computers in 3270 environments to communicate with IBM mainframes. Essentially, MacMainFrame enhances the productivity of Macintosh computers by allowing them to act both as intelligent workstations and dumb terminals. Exceptionally easy to use and designed specifically for Macintosh users, MacMainFrame is available for all Macintosh computers from the Macintosh 512Ke to the popular Macintosh II.