Google Sites, a new offering from Google Apps, makes creating a team site as easy as editing a document. Use Google Sites to centralize all types of information -- from videos to presentations -- and share your site with just a few people, your entire organization, or the world.
Learn about all the features
Google made an announcement last year on launch of Google Sites. This is more than a year after acquisition of JotSpot.
http://hongjun.blogspot.com/2007/12/google-sites-to-launch-next-year.html
Google Sites
http://sites.google.com/
