Keepmind (https://keepmind.ai/) generates flashcards, quizzes and mind maps from an instruction, a url, an image or a document.

The “Smart learning” mode allows you to set up a revision schedule with the choice of the date of reappearance of the cards.

Export pdf, excel and HTML, shared by url.

In the free version, up to 5 subjects and 100 flashcards per subject, documents up to 5 MB.

Source: Framework for the use of AI in education