iCalCopy

iCalCopy is an incredibly useful tool for anyone who needs to manage multiple iCal calendars. It is a free AppleScript application that simplifies the process of copying all to-do items and events from one calendar to another.

One of the standout features of iCalCopy is its ability to transfer events from an existing local calendar to a new calendar on a CalDAV server. This is a lifesaver for anyone who needs to keep multiple calendars in sync across different devices or platforms.

Using iCalCopy is simple and straightforward. Once you open the application, you'll be prompted to choose the source calendar and the destination calendar. From there, iCalCopy will handle the rest, creating a duplicate of your events and to-do items in the new calendar.

Overall, iCalCopy is an essential tool for anyone who relies on iCal for scheduling and organization. Its ease of use and powerful features make it a must-have for anyone who needs to manage multiple calendars. Best of all, it's completely free to download and use, so there's no reason not to give it a try.