Heptabase
knowledge-base · doc-aiA visual knowledge base and note-taking tool that integrates card-based notes, whiteboards, PDF/YouTube annotation, and AI features including an AI Tutor for personalized learning sessions and AI assistance for summarizing and organizing sources.
AFIT verdict
Recommended for students, researchers, and lifelong learners who want to visually organize their research and use structured AI tutoring for learning. The main catch is that it is a commercial product requiring a paid subscription after a 7-day trial.