The dominant flashcard platform, now powered by generative AI. Key 2025 features include 'Magic Notes' (turning lecture notes into study sets instantly) and 'Q-Chat' (a Socratic AI tutor). While its library of 700M+ sets is unmatched, the strict paywalling of legacy study modes and aggressive annual billing have sparked a search for free, AI-native alternatives.

The commercial, cloud-hosted version of Canvas, known for its sleek UI and 'SpeedGrader,' but often criticized for high per-user licensing costs.