Habitica - Habitica is a free habit building and productivity application.
GetBadges - GetBadges is a gamification platform which allows developers to play and compete while using software development tools.
Coach.me - Coach.me is a coach that goes everywhere with you, helping you achieve any goal, change any habit, or build any expertise.
HabitScript - Gamify your coding time
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
Goals & Challenges by Fini - A social way to gamify goals and habits with challenges