This article is from the Mac communications FAQ, by Bruce L Grubb BruceG6069@aol.com with numerous contributions by others.
The desire to get on the Internet has produced dozens of such programs
many of which are listed at The Mac Orchard web page
<http://www.macorchard.com/>. To help the fledgling Internet user I am
listing the most commonly used programs below:
Eudora <http://www.eudora.com/> is perhaps the best written and
most popular e-mail program available for the Macintosh. Eudora
is a complete and versatile e-mail package which can send e-mail
via SMTP (see [5.4]) and receive e-mail via a POP server. It can
even be used with UUPC 3.0 (as a mail reader and message generator,
not a transport agent). Eudora can also be used to transfer
arbitrary Macintosh files between computers through its BinHex 4.0
attachment features. Many accolades go to the author, Steve Dorner.
Hank Zimmerman maintains the comp.mail.eudora.mac FAQ which can be
found at <http://www.ka.net/eudora/faqs/> and the [Unofficial] Eudora
Web Site can be found at <http://www.emailman.com/eudora/>
Eudora Lite 3.1.4 -- 68K version
Eudora 5.0 (free and commercial) --- PowerPC version
The two most popular MacOS FTP clients are Interarchy (formally
known as Anarchie) and Fetch.
Interarchy is sharewhare and has a home site at
<http://www.stairways.com/> and <http://www.interarchy.com/>
Fetch 3.0.3 "is free to users affiliated with an educational
institution or charitable non-profit organization; all other
users may purchase a license."
Two releatively newer FTP clients are Vicomsoft FTP
The oldest and most popular FTP server for the mac is NetPresenz
(formally FTPd) <http://www.macorchard.com/server.html>,
All Mac newsreaders make use of NNTP (see [5.4]).
Newswatcher (2.2.1) by John Norstad and its close sister
Multi-Threaded NewsWatcher (currently Version 3.0.0) by Simon
Fraser are likely the most popular online Newsreaders.
For offline browsing MacSOUP
by Stefan Haller is likely the most popular.
The two most popular browsers are Netscape and MicroSoft Internet
Explorer both of which support frames and other Internet goodies.
The most recent versions (6.0.1 and 5.0 respectively)
can be found at <http://www.netscape.com/> and
MacOS X has at its heart UNIX which means in theory the old
UNIX utilities like rn, tin, pine, and ssh would be available
via the terminal program. email@example.com stated that at least
ssh is included in the public beta.