iToast has released a new shareware application,
calSync, which synchronizes all your calendars with a FTP server. It requires Mac OS X 10.2.
Calendars are subscribed over the Internet today but if you don’t have a .Mac account or a WebDav server you won’t be able to share them. calSync fixes that problem by enabling you to share calendars via FTP, according to Thilo Ettelt of iToast. The update interval and server settings can be set for every single calendar, he said. You can even subscribe your uploaded calendars in iCal.
A trial version is available for free download. Registration is US$3.99.