Heptabase

Heptabase combines linked notecards with a large visual whiteboard, allowing ideas to be organized spatially as well as through written connections. A card can hold an individual thought or a more developed note, then become part of a board that shows its relationship to a broader subject. The journal offers a place to capture daily thinking before arranging relevant material into a more deliberate structure. This approach suits visual learners and researchers working through complex topics, including literature reviews or product planning.

Instead of relying only on folders or a long document, the board makes groupings and gaps visible while retaining the underlying notes. It is a subscription product, so ongoing access involves a recurring plan. Its distinguishing feature is the link between detailed note content and a visual overview, helping people move between close reading and a wider view of how their ideas fit together.