This article is from the Miscellaneous Macintosh FAQ, by Elliotte Rusty Harold firstname.lastname@example.org with numerous contributions by others.
With the increasing popularity of cross-platform development,
many Macintosh programs like Adobe Illustrator, Adobe PhotoShop,
and Microsoft Word are able to save directly to a format readable
by DOS or Windows programs. You'll still need to mount the DOS
floppies in the Mac drive using one of the products discussed above
or do a default translation from within Apple File Exchange.
Although translators for Apple File Exchange could theoretically
be designed to translate files made by applications without these
capabilities, AFE has never really caught on. The best solution is
a payware product by DataViz called MacLink Plus. MacLink Plus,
about $70 street price, can translate over 1000 DOS, Windows,
Macintosh, and NeXT formats back and forth. For $25 more the Pro
version comes bundled with a copy of Macintosh PC Exchange. Some
translators are also bundled with some of the CD versions of
System 7.5 and with certain PowerBooks and Performas.