AIM for Mac was the macOS version of AOL Instant Messenger (AIM), a popular instant messaging (IM) client. It allowed Mac users to connect with others using AIM, send and receive messages, and participate in chat rooms.

Important Note :

AOL shut down AIM in 2017. Therefore, there is no longer any official AIM client for Mac (or any other platform). Any AIM client available now would be a third-party application, likely outdated and potentially insecure. You cannot use it to connect to the AIM network.