Yahoo! Messenger 10 - Chat, Instant message, SMS,
 

Do a lot more than just IM with Yahoo! Messenger 10 Enhanced video calling Sense like you're there with high-quality, total display video clip and voice calling Retain up with what your pals are carrying out See your friends' hottest updates from Yahoo!, Flickr, Twitter and more using the new “Updates” view Enhanced language help Change your preferred language in Yahoo! Messenger with just a couple clicks
Check out a video demo

System necessities: Microsoft Windows XP, Vista, 7.

Other versions: Mac, Web site, Cellular, iPhone