Purp - A smart to-do list and goal tracker app
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Things - Things is an easy to use task manager.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.