Fantastical is a small application that comes in handy whenever you have a busy day at work and you need extra help to keep track of all the daily tasks. This program can also be used to set birthday reminders, projects due dates, and other events that are important to you.
This simple utility lets you easily manage the list of events whenever you like, from its intuitive main menu. With just one keystroke you can update an event by altering the message, enabling a sound alarm or changing the due date. Unfortunately, the program doesn't let you select your own music for the alarm sounds.
Personally, I like the fact that you can also add invitees to your events. The application communicates well with Mac's Address Book and you can invite any of your contacts to the created event.
In addition, an effective integrated search tool offers you support whenever you need to find a certain event that was saved on your calendar.
If I have to summarize, Fantastical is a nice companion on a busy working day as it provides you with an easy way to keep yourself informed with all of your daily tasks.
iCal - share your events with your friends and see your friend's calendars.
iCal birthday and anniversary calendars with alarms.
Organize important events by urgency.
Very simple calendar that you can print.
A free utility that copies events from Now Up-to-Date to iCal.