ICQ vs Yahoo Messenger

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
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.
Comparing ICQ vs Yahoo Messenger is like comparing apples to oranges. Because your business is unique and nobody except you can decide, which is better for your company. But we can add some fun to your research and suggest some new comparison parameters.

Ok, now let's compare the UI. Looks like ICQ has more user-friendly interface than Yahoo Messenger because it's bigger. At least on our screenshots

To compare the popularity of the solutions we counted how many alternatives people search for each of them on the Internet. And it turns out that ICQ is more popular than Yahoo Messenger

Now let's look at the recent activities of our competitors:

- Yahoo Messenger becomes a mobile messenger (in 2015)
- Yahoo Messenger for Vista reaches new speeds (in 2008)
- Yahoo Messenger is now Webware (in 2007)
- Yahoo released Yahoo Messenger 8.1 (in 2006)
- Yahoo! MSN adds Mac IM interoperability (in 2006)
- Microsoft and Yahoo IM services to become interoperational (in 2006)
- Yahoo Messenger gets plug-ins (in 2006)
- Yahoo and Microsoft IM: Can we talk? (in 2005)
- Yahoo to Trillian: Talk to the hand (in 2004)
- BT, Yahoo mix VoIP with messaging (in 2004)

Looks like Yahoo Messenger was recently more active than ICQ (at least in our news).