Better Than iCal But Still Flawed
2016 Updated Reveiw: I tried to go back to iCal after running into a major issue with BusyCal, specifically that my Mac was not happy with iCal turned off. Certain software apparently needs to see iCal or there are delays and timeouts while OSX seeks out iCal. However, that experience only served to show me that BusyCal is still a better calendar program, so I went back to it and fixed the aformentioned problem by leaving iCal active in the background.
Giving the multiple problems I have had with BusyCal for the many years I have been using the software, there is no way to award this app anything more than 4 stars.
Thomas Austin about BusyCal 2