Everyday - Take a photo of yourself everyday.
Habitify - The easiest way to keep track of your habits
Habit - Habit is a habit tracker application that allows users to keep track of the habits all day long and throughout the year.
Fast Habit Print - Print a page. Track your habit. Free and simple.
Momentum - Agile goal and performance management
HabitCoach - Habits to follow from the best life-changing books.