1)   Microsoft Messenger for Mac 6.0.2
By using Microsoft Messenger for Mac, you can see when your friends, family, coworkers, and associates at other companies are online and then communicate with them instantly. Run on both PowerPC-based and Intel-based Macs. - Absolutely Free
microsoft messenger for mac, microsoft messenger, microsoft messenger mac, for mac, for-mac.com, software for mac, mac os x, instant messenger, mac software, apple,