App works perfectly with my iCal account, but doesnt even pretend to talk to my Exchange account. Since BusyCal has made much of its ability to work with exchange servers this should at least be noted so folks can decide whether its worth it to shell out $5 for an app that only does half of what they might expect. (BusyCal is a great program, though pricey).
njmatch3 about BusyToDo