Anki

RemNote

RemNote combines note-taking, flashcard creation, PDF annotation, and AI-powered study tools into one app built around helping students retain what they learn, not just record it. Notes can be automatically or manually converted into flashcards, which are then reviewed using a spaced repetition algorithm that schedules reviews at optimal intervals for memory retention. Beyond flashcards, RemNote supports PDF and PowerPoint annotation, typed and handwritten notes, an AI tutor chat, and databases for organizing course material, positioning itself as a replacement for juggling separate tools like Quizlet, Anki, Notion, and Evernote.

MarginNote

MarginNote is a study and knowledge-management app for Mac and iPad, positioned as a place 'where deep reading leaves a trace.' It integrates PDF/EPUB annotation, mind mapping, and an FSRS-based spaced-repetition flashcard system so that highlights and notes automatically become study cards across multiple linked formats.

Clozemaster

Clozemaster is a language-learning platform built around the cloze fill-in-the-blank exercise format, where learners complete real sentences rather than isolated vocabulary flashcards. It covers more than 50 languages with over 170 language pairings, and uses spaced repetition to reinforce words learners have already seen. Learners can choose multiple-choice or typing modes, track progress by word frequency to prioritize the most useful vocabulary first, and the platform recently added grammatical sentence analysis. The core game is free to play, with an optional Pro subscription that unlocks advanced features for more serious learners, available on web, iOS, and Android.

Brainscape

Brainscape is a digital flashcard platform built around Confidence-Based Repetition (CBR), where learners rate how well they know each card and the app adjusts review frequency accordingly to focus time on weaker material. It can automatically generate flashcards from uploaded PDFs, PowerPoints, Word documents, Excel files, and videos using AI.

StudySmarter

StudySmarter is an all-in-one study platform for university and secondary school students, combining flashcard creation, note-taking, and AI-powered explanations in one app. Students can convert lecture slides into flashcards, take AI-generated mock exams with instant feedback, and access millions of community-created study sets alongside their own material.

Quizlet

Quizlet is a popular online learning tool that enables students and educators to create, share, and study digital flashcards. It transforms traditional study habits into engaging digital experiences through various interactive modes like matching games and practice tests. The platform incorporates artificial intelligence features, such as Q-Chat and Magic Notes, to help users generate study materials from their notes and test their understanding through conversational AI. It is widely used in classrooms and self-study environments globally.