
The software supports a slew of browsers including Internet Explorer, Firefox, Safari and Opera.
Yahoo's vice president of product development for the messenger touted that the online application allows users to access their contacts from any location. It also allows users to circumvent hurdles on corporate networks that prevent the use of messaging applications.
Stand alone messaging applications can be easily blocked by locking down the network port over which they communicate, or by preventing users from installing any software on their computers. A web based client isn't affected by either measure.
The features of the online service differ with those of Yahoo's instant messaging application. The online service for instance allows users to search through past conversations, but lacks support for VoIP calls and webcams.
The service also offers interoperability with Microsoft Messenger, a feature that was first announced in July 2006. The two combined networks provide access to 350m users.
Yahoo has previously offered instant messaging application. The search provider earlier this year integrated an online IM client with its web mail client.