Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

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

Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.

Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .

EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.