Todoist
Freemium
Todoist: To-Do list and Task Manager.
Task Coach
Open Source
A simple and friendly task manager written in Python.
TickTick
Freemium
TickTickis a cross-platform to-do list app & task manager helps you to get all things done and make life well organized.
Org-mode
Open Source
Org-mode is an Emacs Mode for Notes, Planning, and Authoring.
2Do
Commercial
2Do lets you take a completely different approach to managing your tasks. With its extremely simple-to-use interface.
Nitro
Open Source
Nitro is free open source task management software.
Conqu
Freemium
Conqu is a simple yet powerful task management tool designed to help you conquer your inbox and get things done.
Things
Commercial
Things is a delightful and easy to use task manager.
OmniFocus
Commercial
OmniFocus is a personal task manager.
WizNote
Freemium
WizNote is a cross-platform cloud based note-taking client.
Todo.txt
Open Source
todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and easily Todo management software.
TaskPaper
Commercial
TaskPaper is a plain text to-do list that's surprisingly adept.
Tasque
Open Source
Tasque is an open source task management application.
Nozbe
Commercial
Nozbe is a to-do, task, project and time management application.
