I’ve been looking for a decent calendar to use. I signed up for something lastweek and the user interface sucked, so I never really used it. Thanks to that ZDNet blog, I’ve found Kiko. Kiko is exactly what I’ve been looking for in terms of a calendar. And the sweet AJAX interface makes it really fun to work with.
You should check out the post at ZDNet, you could basically replace Microsoft Office with these web based AJAX applications. Maybe not replace Office entirely, but a lot of the same functionality is there.