One of the best-equipped of these is Yahoo Messenger, which offers an almost identical system to the one already present on the desktop.
The look of Yahoo Messenger is very orderly and quite appealing, witht he the contacts list located to the left, leaving space remaining for the chat windows.
You can add contacts on this same interface, whether they come from Yahoo or Windows Live Hotmail. For each of these contacts you can save a conversation history and you can place them in groups.
As far as the user is concerned, he or she can change status and can personalize their profile. With a Yahoo avatar, other contacts can see you.
Messages can be personalized with different types of lettering and a wide range of emoticons.
With all these features going for it, Yahoo Messenger has become one of the chief alternatives when it comes to logging on to an online messenger.