Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
Habit List - Create good habits and break bad ones with the app that keeps you focused.
Wallcat - Enjoy a new, beautiful wallpaper, every day.
Momentum - Agile goal and performance management
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.
Streaks - The to-do list that helps you form good habits.