CompuServe Messages

Perseus does run on the Mac, but also on CD-ROM and videodisc player. An early and very forward-looking application, and a cult classic for the humanities. I believe this is an excellent resource for the classicists, but appears to require a substantial stand-alone workstation. Not over-priced, either — hardly a commercial title even if it is sort of commercially marketed. There are a few articles/reviews in the literature describing this application.