Anki - powerful, intelligent flashcards
https://apps.ankiweb.net/?action=login
WEBUse the free AnkiWeb synchronization service to keep your cards in sync across multiple devices. Flexibility. From card layout to review timing, Anki has a wealth of options for you to customize. Media-Rich. Embed audio clips, images, videos and scientific markup on your cards, with precise control over how it's shown. Optimized.
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