From [1997 to 2017][1], America Online's Instant Messenger had many
features to chat w/AOL, AIM, ICQ, iChat and some mobiles.

Download links and forum posts of three AIM versions:
[AIM 2.0.531][2] (2.42 MB) � [Forum Post][3] � 1998 � Mac OS 7.1.1 and up
[AIM 4.0.972][4] (3.29 MB) � [Forum Post][5] � 2000 � Mac OS 7.6-OS 9.x � Mac OS 7.5 also needs [CFM-68K][6]
[AIM 4.7.1333][7] (3.4 MB) � [Forum Post][8] � 2004 � Mac OS 8.6 up to Mac OS X

NINA

When AOL discontinued their AIM service, a non-profit launched AIM
Phoenix, a free service where people could register screen names to
use AOL's AIM clients and chat with other registered users, even if
it's not as stable or secure as AOL's original service. After several
incidents, most of the personnel involved left Phoenix and started
[NINA][9], which is now considered the de facto AIM (and AOL) revival
project.

Security Risks: AIM wasn't the most secure chat, and as a free third-
party chat server, anyone wanting to use this free AIM service should
avoid using it to share sensitive details like account IDs and
passwords: basically anything you'd never post online � instead,
fallback to email, text/sms messaging or official chat services from
Google, Yahoo, Facebook, Twitter, MSN, Apple, WhatsApp, etc. � please
be mindful that although AIM chats are just between you and other AIM
members, all of the information entered into an AIM profile is
publicly searchable

Registering a Screen Name and Password: For unofficial services like
NINA, one should use unique screen names and passwords � think
disposable � especially not anything you're using now or may want to
use later on for sensitive online authentication like online banking,
work and email logins, etc.

How to install and run NINA:

� Important: please review the registration tips outlined above before
registering your screen name
� Register a new AIM screen name at the [NINA website][10] using a
valid email for authentication
� Install any version of AIM below 4.7 (Currently has authentication
issues with NINA, earlier versions will work)
� Using ResEdit, open the AIM application, find the STR# resource "AIM
Server", and change string #1 to login.oscar.nina.chat
� Save and close in ResEdit
� Run AIM and sign-in using the screen name you registered

Messaging Tips: use common sense when chatting with anyone online � if
the AIM Buddy List is set-up and supervised by a grown-up to send and
receive instant messages only to trusted friends and family, then
teenagers might possibly use it

Troubleshooting Tips: while using the AIM Phoenix service, the AIM
preferences file can sometimes cause the program to crash, freeze,
display a connection error message or simply refuse to sign into the
server. Exiting the program (using the Quit command) then removing and
trashing the AIM Prefs file � not the AIM Prefs Folder (that's an
important distinction) � fixes most of these connection and stability
issues � doing this also wipes any preferences you've set. These sign-
in errors tend to happen when you've opened the program and after the
prefs file gets created the previous time the program attempts to, or
does, sign-in � restarting your Mac can also help (as part of basic
troubleshooting 101)

Please note: The AIM Phoenix client has been left in the uploads for
now, but should generally be considered of historical interest only --
active development is on NINA and if you want to actually use AIM
casually you should use one of the regular clients and patch it for
use with NINA as detailed above.

Compatibility
Architecture: 68k PPC PPC (Carbonized)

AIM Phoenix works with either 68k and PPC Macs running the following
Mac OS versions:
? Mac OS 7.5 - 7.5.5 � requires installing the [CFM-68K 4.0][6] system
extensions to run
? Mac OS 7.6 - 8.1
? Mac OS 8.5 - 9.2.2
? Neither AIM Phoenix nor AIM 2.0 have been tested on PCE/Macplus
w/Mac OS 7.1.1-7.5.5 and [CFM-68K][6]

  [1]: https://mashable.com/2014/04/15/aim-history/
  [2]: http://www.mediafire.com/?7g6xtsp2889rzzd
  [3]: http://macintoshgarden.org/apps/aol-instant-messenger-20531
  [4]: http://macintoshgarden.org/sites/macintoshgarden.org/files/apps/InstallAIM4.0.972.bin
  [5]: http://macintoshgarden.org/apps/aol-instant-messenger-40972
  [6]: http://macintoshgarden.org/apps/cfm-68k-40
  [7]: http://www.mediafire.com/?9qmmrv7d29k9qh5
  [8]: http://macintoshgarden.org/apps/aol-instant-messenger-47
  [9]: https://nina.chat
  [10]: https://account.nina.chat/register/