Simplenote
Open Source
Simplenote is an easy way to keep notes, lists, ideas and more.
Things
Commercial
Things is a delightful and easy to use task manager.
Doit.im
Freemium
Doit.im is a Cross-platform Best Online GTD Service, which can sync with Phones.
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.
Moo.do
Freemium
Moo.do brings all of your tasks together into one consistent interface.
Nozbe
Commercial
Nozbe is a to-do, task, project and time management application.
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.
Todo.txt
Open Source
todo.txt is software and operating system agnostic; it's searchable, portable, lightweight and easily Todo management software.
Taskwarrior
Open Source
Taskwarrior is an open-source, cross platform time and task management tool. It has a command-line interface rather than a graphical user interface.
Tasque
Open Source
Tasque is an open source task management application.
germ.io
Free Personal
germ lets your team capture every great idea, brainstorm and turn them into actionable project plans.
ActiveInbox for Gmail
Commercial
ActiveInbox for Gmail is an email management software for Gmail.
Compare Conqu with alternatives
Compare ActiveInbox for Gmail and Conqu and decide which is most suitable for you.