Habitica
self-hosted, miscellaneous

Habitica is a habit tracker app that gamifies goal-setting by treating users' goals as if they were part of a role-playing game (RPG). Previously known as HabitRPG, Habitica allows users to create tasks and habits, gain experience points and rewards, and level up their characters as they achieve their goals. It incorporates game elements such as avatars, quests, and rewards to motivate users to develop positive habits and stay productive in their daily lives.