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

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…

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.

GTasks is a simple and efficient todo or task management app with Google synchronization.

Any.do is a life management and productivity app.

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.

Google Tasks is the task list functionality provided by Google.

Holiline Reminder is a free software calendar program for Windows.