Mac OS instant messaging clients

AOL Instant Messenger
AOL Instant Messenger (abbreviated AIM) is an instant messaging and presence computer program which uses the proprietary OSCAR instant messaging protocol and the TOC protocol to allow regi...

Kadu (software)
Kadu is a Polish instant messenger using the Gadu-Gadu and Xmpp protocol.

Microsoft Messenger for Mac
Microsoft Messenger for Mac (previously MSN Messenger for Mac) is the official Mac OS X instant messaging client for use with Microsoft's .NET Messenger Service and is developed by the Mac...

Yahoo! Messenger
Yahoo! Messenger (sometimes abbreviated YIM) is an advertisement-supported instant messaging client and associated protocol provided by Yahoo!.