2Do lets you take a completely different approach to managing your tasks. With its extremely simple-to-use interface.

Clear is a tasks, reminders and To-Do lists app.

Doit.im is a Cross-platform Best Online GTD Service, which can sync with Phones.

FCorp My Calendar is a free software to manage a diary, notes, schedules, birthdays, etc.

germ lets your team capture every great idea, brainstorm and turn them into actionable project plans.

Google Tasks is the task list functionality provided by Google.

Awesome notes is a powerful text and voice note taking application with many great features.

Conqu is a simple yet powerful task management tool designed to help you conquer your inbox and get things done.

EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries, e…

footnote is a very light and neat Notebook App for elementary OS.

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.

Grindstone is a free app that lets you easily and accurately keep track of your time.