Hepta

Heptabase provides a visual, block‑based environment for creating and organizing notes, designed for students, researchers, and lifelong learners. Users can capture information on whiteboards and cards, link blocks bidirectionally, and keep sources, highlights, and discussions together in a single knowledge base. The macOS‑only application supports PDF annotation, daily journals, web clipping, and integration with services such as Readwise and Zotero, allowing seamless import of external material.

The tool includes an AI tutor that can explain imported sources, conduct research with cited results, and run structured tutoring sessions aligned with the user’s notes. A command‑line interface enables interaction with large language models like Claude and Codex, extending automation and custom workflows. By combining visual organization, AI‑assisted research, and extensive integrations, Heptabase aims to help users master complex subjects and maintain a connected, searchable record of their learning.