ICQ and Yahoo! Messenger are two chat systems that have been in use for years and offer quick access to their mobile services. Both ICQ and Messenger have many features that allow users complete control of their chat rooms.
ICQ features connectivity to famous networking sites, such as Facebook. It allows its users to share files and create group chats. One of the most prominent features ICQ has is the ability to send and create video and voice calls.
Yahoo! Messenger is one of the oldest chatting systems on the web. Its use requires an email account that must be associated with Yahoo. It also features video and webcam calls along with file sharing capabilities.