Anki!

Memrise is a free tool for learning vocabulary in multiple languages, using enhanced flashcards, powerful memory techniques, spaced repetition, and community sharing. Flashcards, lists, and mnemonics that are added by anyone are available to all (for study and in a "Memorable Dictionary").

Master your academic subjects with the leading revision app! Create flashcards on all manner of topics, or choose from the millions designed by other Quizlet students. If you're doing standardized test prep for big exams (including GCSE or A Levels), doing revision for an upcoming test at your uni, or simply need homework help, you can enhance your study experience with these powerful interactive learning tools:

Read any text, translate the words and phrases you don't know, and let Readlang create flashcards to help you learn.

NimbleNotes is an online note taking and study platform, designed to help students learn more efficiently. Our digital notebook improves your learning workflow with instantly generated flashcard decks, study session analytics, and advanced filtering capabilities.

AnkiApp is a simple, efficient, flashcard app that lets you study at your own pace, whenever you have time. Study sessions are as quick as 1 minute or less. It works on phones, tablets, and desktop browsers, and synchronizes automatically between all your devices.

SuperMemo (from "Super Memory") is a learning method and software package developed by SuperMemo World in Poland from 1985 to the present. It is a practical application of the spaced repetition learning technique that has been proposed for efficient instruction by a number of psychologists as early as in the 1930s. The authors of the learning method, and lead programmers of the software, are Dr Edward Jacek Gorzelanczyk and Dr Piotr Wozniak.

Mnemosyne (named for the Greek goddess of memory, Mnemosyne) is spaced repetition software developed from 2003 until the present. The software is similar to SuperMemo, commercial software developed by Piotr Wozniak.

Vocabulary.com is the easiest, most intelligent way to improve your vocabulary. It combines an adaptive learning system (The Challenge) with the world’s fastest dictionary (The Dictionary) so that you can more quickly and more efficiently learn words.

Tinycards is a learning and memorization app from Duolingo . Learn almost anything with delightful, animated decks. Create your own decks and share them with friends, or pick from a variety of ready-made collections.

A website for learning new words in many languages using images.

Learning with Texts (LWT) is a tool for Language Learning, inspired by Stephen Krashen's principles in Second Language Acquisition, Steve Kaufmann's LingQ System and ideas from Khatzumoto (published at AJATT - All Japanese All The Time). 100 % free, Open Source, in the Public Domain.

Vocabla is an app for building your English vocabulary.

Lexicum is a vocabulary building tool that blends in the learner's language context. It offers a cross-platform electronic dictionary to look up words and grow a personal word collection, to be reinforced with flashcards. This app supports 20+ languages, from Latin and Ancient Greek, to many European, Middle Eastern and Asian languages.

FullRecall is a software that can help you memorize the knowledge for lifelong periods with the minimum time investment. Underlying artificial neural network gradually grasps your forgetting curve to schedule optimal days for the reviews–i.e., days when you will be close to forgetting an information.