1. Todoist is a to-do list that helps you get organized, at work and in life.

  2. Wunderlist is the easiest way to get stuff done. Whether you’re planning a holiday, sharing a shopping list with a partner or managing multiple work projects, Wunderlist is here to help you tick off all your personal and professional to-dos.

  3. Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.

    freemium $12.5 / Monthly (Per user - Business Class)

  4. Remember The Milk is a task and time management application for mobile devices.

  5. Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.

    freemium $11.99 / Monthly (Per user - Premium)

  6. to-do list app that integrates with Gmail and Google Calendar

  7. Toodledo provides a set of tools to increase the productivity.

  8. WorkFlowy is an organizational tool that makes life easier. It's a surprisingly powerful way to take notes, make lists, collaborate, brainstorm, plan and generally organize your brain.

  9. Quire is a collaborative project management tool that aims to make your life easier.

    free

  10. The open-source Trello-like kanban (built with Meteor)

  11. The #1 task management app used by over 11 million people globally, Any.do is your free mobile and online task manager for Android, iPhone, Web and more.

  12. An Agile, Open Source, Free Project Management System