ICQ vs Yahoo Messenger
Last updated: December 07, 2015
ICQ is an instant messaging computer program. ICQ features include sending text messages, offline support, multi-user chats, free daily-limited SMS sending, resumable file transfers, greeting cards, multiplayer games and a searchable user directory. ICQ alternatives for business are: Slack, Hipachat, Microsoft Teams
Yahoo! Messenger is an instant messaging client and associated protocol provided by Yahoo!. Yahoo! Messenger offers PC-PC, PC-Phone and Phone-to-PC service, file transfers, webcam hosting, text messaging service, and chat rooms in various categories.