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Heptabase

An intelligent, visual knowledge base built for students, researchers, and lifelong learns

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Heptabase is a visual knowledge base for students, researchers, and lifelong learners, combining whiteboards and cards with an AI tutor for structured learning and research. It brings sources, notes, highlights, and discussions together in one connected workspace, with a block-based editor, bi-directional links, PDF annotation, daily journals, a web clipper, and Readwise and Zotero integrations. It also offers a CLI that works with coding agents such as Claude Code and Codex.

The AI Tutor runs structured, personalized learning sessions, while the AI agent can explain sources, take notes, and organize the knowledge base from PDFs, YouTube videos, notes, and journals. Heptabase is available on Mac, Windows, Linux, iOS, and Android. It is offered in Pro, Premium, and Premium+ editions with monthly or yearly billing, each including a set number of AI credits per month, with higher tiers adding unlimited PDF uploads and parsing, broader AI model access, the AI tutor, and discounted additional credits. A 7-day trial is available.

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