MacSOUP is an offline reader for Usenet newsgroups and Internet e-mail. If you don't know what newsgroups are, you probably don't need this program. MacSOUP is primarily a newsreader, its e-mail capabilities are somewhat rudimentary compared to "real" e-mail clients.
MacSOUP is shareware ($20). See the Order page for details.
The current version of MacSOUP (2.8.3) is available for Mac OS X (version 10.3 or later; Universal Binary), and for Classic Mac OS; the version for Classic Mac OS has been tested on Mac OS 9 only. It probably runs well on Mac OS 8.5 or later, and with a bit of luck even on earlier systems.
MacSOUP is compatible with Mac OS X 10.5 (Leopard) and Mac OS X 10.6 (Snow Leopard).