If you use FileMaker to manage your company's events & to do's, myFMbutler's FileMaker to vCal solution is what you need.
Using FileMaker Server 7 Advanced, you can subscribe to your FileMaker data from products like iCal (Mac), Mozilla calendar (Windows or Mac), or Sunbird (Windows or Mac).
- Fixes a bug where all-day events (i.e. events without a start and end time) where not translated correctly.
- Mac OS X 10.3 or later, FileMaker Server 7 Advanced.