Workflowy - A better way to organize your mind.
Habitica - Habitica is a free habit building and productivity application.
CarbonFin Outliner - Great application for creating lists and outlines that need to be accessible anywhere, good for...
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.