Habitica - Habitica is a free habit building and productivity application.
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.
Do It Now - Do It Now is a great mobile app that helps you to create new habits and maintain focus on your goals.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
myPoli - Gameified to-do list and habit tracker.
Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.