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.

Kids Flashcards - Kids Flashcards offers free printable flashcards for kids, parents, and ESL teachers of preschool, kindergarten, primary and secondary education. 1300+ picture card are available for learning English, French, Spanish, German, Chinese and other langs.

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.

PrepFlash - Automatic flashcard generator

Kartka - Kartka is a flash card learning tool with real-time sync, spaced repetition algorithm, and a modern and friendly interface.

List:Daily Checklist - List:Daily Checklist is one of the most-exceptional apps that makes its users punctual, consistent, and sustained them for a long time.