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.

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.

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

Discovery FlashCards - Discovery FlashCards is a unique free program that can help you study.

RemNote - All-in-One Tool For Thinking & Learning

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