Habitica - Habitica is a free habit building and productivity application.
Elisi - Elisi – Digital Bullet Journal app allows the user to track their week by making plans and to-do lists.
Loop Habit Tracker - Loop Habit Tracker (AKA uhabits) helps to create and maintain good habits in order to achieve their...
Daily check: Routine Work - Daily check: Routine Work app comes up with features to help you in managing your daily routine.
ActivityWatch - Log what you do on your computer. Simple (yet powerful), extensible, no third parties.
HabitMinder - Change your habits, change your life! Your healthy habit reminder and tracker.