Windows Live Messenger 9.0 Build 14.0.3921.0717 Beta

Windows Live Messenger is the next-generation MSN Messenger. It has everything you already love about Messenger - your contact list, emoticons, and instant access to your friends via text, voice, and video - plus new ways to connect and share photos and documents effortlessly. It's faster than e-mail and is a great choice for conversations and the perfect alternative when you can't be there in person. As always, it's free to download Messenger and use most of its features.
Windows Live Messenger (WLM), still commonly referred to by the previous name of MSN Messenger (MSN for short), is an instant messaging client for Windows XP, Windows Server 2003, Windows Vista, and Windows Mobile, first released on December 13, 2005 by Microsoft. It is part of Microsoft's Windows Live set of online services.