Apple's .Mac service is a yearly subscription-based suite of Web and software services for Mac users. Subscribers get 10GB of online storage, e-mail address, and a Web-based e-mail client. They can also publish their own blog, which can be edited and managed using Apple's iWeb software.
Users of .Mac can build public or private meeting pages using the groups service. Each group gets its own shared file storage, calendar, e-mail, and message board. There's also a feature called "Back to My Mac" which will let you access files on multiple networked computers.
Winner: .Mac (Apple.com/DotMac)