Heptabase

Heptabase is an intelligent visual knowledge base designed to help users deeply understand complex topics. It combines whiteboards, cards, and AI to facilitate research, note-taking, and learning. Core capabilities include AI-powered research with citation verification, an AI tutor that guides structured learning sessions, and a customizable workspace with block-based editing, bi-directional links, and PDF annotation. Users can import sources from PDFs, YouTube, and other formats, and organize insights seamlessly. The platform integrates with tools like Readwise, Zotero, and CLI agents. Best suited for students, researchers, and lifelong learners who need to manage complex research projects, prepare for exams, or build a personal knowledge base. Typical use cases include academic research, deep topic exploration, and synthesizing information from multiple sources.