You can schedule alerts to remind you of tasks you should not forget. Scheduler for Macintosh has a helper application called Viewer where you can view your alerts. You can choose the font face and size. You can edit its settings, inactivate it or snooze it with a button click without launching the main application.

Unlike other applications, you can use iTunes songs or your own sounds so that your reminder will be accompanied by your favorite song or the sound of your baby laughing. Just record any sound with Scheduler's built-in Sound Manager.