ICQ 2.1 Beta
the author of this app says:
ICQ is a revolutionary, user-friendly Internet tool that informs you as to who's online at any given time, and enables you to contact them.
No longer will you search in vain for friends or associates on the Net. ICQ does the searching for you, alerting you in real-time when others log on.
You need to have an ICQ Number before installing this version.