Apple's iCal can help you share your schedule by publishing calendars to .Mac and WebDAV servers. Because .Mac is expensive and WebDAV can be hard to come by, Scalp is a tiny hack for iCal that allows calendars to be published to the Web via FTP and SFTP.
This review was originally posted on VersionTracker.com. This is the key anyone should use to share your calendar! I cannot glow enough about it. Now, will there be an update for OS 10.5? I just upgraded to Leopard and it quit working. Bummer. But you have GOT to get this and use it!
This review was originally posted on VersionTracker.com. You'll want to manually install the files as specified in the ReadMe. It seems the installer creates the folders, but doesn't copy the files over. Once installed, this works flawlessly.