Try Google Calendar!!!

http://calendar.google.com/
Using Google Calendar, you can add events and invitations effortlessly, share with friends and family (or keep things to yourself), and search across the web for events you might enjoy. It's organizing made easy.

尝试了一下，挺好玩的。可以添加一些event，而且可以把时间定到很精细。但是没有找到哪里有统计的功能。

创建一个新的calendar，然后把Outlook里的Calendar导入进去，再看一看，互相比较一下。

很好用,可是经常上不去!如果在EVENT里面能够添加附件就好了,还有里面的数据能不能倒出来?XML格式或者什么其它之类的.

不错！！

How do I export my Google Calendar data?

To export Google Calendar content, just follow these steps:

1. Under "Calendars" in the left column, click on the down-arrow button next to the appropriate calendar, then select "Calendar settings." (Alternatively, click on "Manage Calendars" under "Calendars" in the left column, then click on the name of the appropriate calendar.)
2. Click on the "ICAL" button under "Private Address" and click on the displayed URL.
3. Save the exported file to the desired folder on your computer.
4. Following the instruction on the calendar application of your choice, import the file you exported from Google Calendar to the calendar application.