WeSync lets you share dynamic information, like Calendars and Contact Lists, with others from your Palm?-based handheld and Windows? desktop. A free service, WeSync keeps track of the information you're sharing, and who you're sharing it with, updating everyone automatically as that information changes and evolves.
With WeSync it's also easy to view and manage shared information. You can view multiple calendars at the same time, and create additional calendars right from your handheld or desktop.