Go For It! is a simple and stylish productivity app, featuring a to-do list, merged with a timer that keeps your focus on the current task. Go For It uses Todo.txt as a backend and the Pomodoro technique for the timer.

Fokus is an open source application that combines a todo list and a calendar that can help you manage your school related work and events in one place. It's fast and beautiful yet simple design that can help you focus on what matters most.

Command line todo list with git sync.

Put your most important task or goal in the menu bar. Its presence there will help remind you without being annoying.

GeeTeeDee is a fancy, lightweight, easy to use and effective task management software.

A GTK app to remind you of active tasks every day.

TaskLite is built from the ground up to be a command line task manager. It's functionality is similar to Taskwarrior but with a simpler codebase, reduced complexity, faster performance, and more active development.

Organizo - Organize your tasks and be reminded.

Simplify your productivity with this simplest to-do app. Focus on tasks, prioritize and boost productivity together with friends.

TodoTxtMac is a minimalist, keyboard-driven to-do manager for Mac OS X (10.8 Mountain Lion and higher) that conforms to the todo.txt format spec. - mjdescy/TodoTxtMac

Simple professional organizer & daily planner with priority tasks & subtasks

DayTasks lets you easily manage adding new tasks, removing tasks, marking tasks complete, archiving completed tasks to your done.txt file, and even filtering and searching through tasks in a simple way that lets you find certain projects or contexts easily.