Heptabase
Heptabase is a visual knowledge base for learning, research and writing. It combines connected note cards and whiteboards with source material and AI assistance, helping turn scattered information into an understandable structure.
Kosmik
Kosmik was a visual workspace for collecting research, organizing references and building moodboards on an infinite canvas. Its official site now announces a sunset date of 31 May 2026, so it should be understood as a winding-down product, not a currently supported recommendation.
Miro
Miro is a collaborative visual workspace for planning, workshops and product development. Its shared canvas combines whiteboarding with structured documents, diagrams and AI-assisted workflows.