Gone - An ephemeral to-do list

Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

Streaks - The to-do list that helps you form good habits.

Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.

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.