Habitica - Habitica is a free habit building and productivity application.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
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.
Purp - A smart to-do list and goal tracker app
Pomodone - Pomodone is the easiest way to track your workflow using Pomodoro technique, on top of your current task management service.