Power Planner - Record homework and class schedule.
Time Sink - Time Sink helps you track how you spend your time on your Mac.
FamCal - FamCal is an organized and managed calendar to track the family records like events, notes, and dates of births.
Anti-Social - Anti-Social is a productivity application for Macs that turns off the social parts of the internet.
Sectograph - Sectograph app enables you to create a visual event tracker to keep track of all your upcoming events and due tasks right from the home screen.
Cold Turkey - Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!