Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Effortless - Stay focused and beat procrastination on your Mac.
Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Strikethru - Strikethru is a kind of to-do list notebook for managing work lists and staying updated with the important tasks.
Forest App - Forest is an app that helps you stay focused on the important things in life.