Quizlet

Quizlet is a free website providing learning and teaching tools for students, parents, and teachers. From flashcards to help you learn French to games that make it easy to understand history, Quizlet offers a variety of tools to conquer any challenge. Members can search for or create and share their own "Study Sets" which are lists of terms and definitions or questions and answers, and can include words, images, and audio. By creating study sets, Quizlet automatically generates flashcards, quizzes, practice tests, and matching games based on the content of the set.

• 50 million monthly learners
• 3+ billion study sessions
• 350 million study sets

Their website claims that 90% of students who use Quizlet report receiving higher marks.