Windows Live Mail beta: http://imagine-msn.com/minisites/mail
Windows Live Messenger beta: http://imagine-msn.com/minisites/messenger
Windows OneCare live beta: http://www.imagine-msn.com/minisites/onecare
Windows Live Mail - mobile beta: http://imagine-msn.com/minisites/mobile
Windows Live Local Beta: http://www1.imagine-msn.com/minisites/local
Office Live Beta: http://www.microsoft.com/office/officelive/default.mspx
Try Windows Live Safety Center beta : http://safety.live.com
Try Windows Live Favorites beta: http://favorites.live.com
