BrainDump: AI Thought-Mapping Canvas

Most note apps make you decide where a thought goes before you have finished having it. BrainDump inverts that: you dump thoughts onto an infinite canvas, and the system works out how they relate.

GPT-4 handles auto-categorization and roadmap generation. Embeddings score similarity across four typed edge types, semantic, entity, temporal, and causal, which ReactFlow renders as a live graph. A Socket.IO pipeline connects the React frontend to a Node and Express backend, so classification runs asynchronously but lands before you have finished the next thought.

Four typed edges instead of one generic link. "These two ideas are about the same thing" and "this one caused that one" are different relationships, and collapsing them throws away the structure that makes the graph useful.

IndexedDB for client-side persistence, with no server-side storage by default, so half-formed thinking stays on your machine.

The canvas is the primary interface. There is no folder tree to maintain, because maintaining one is the work people avoid.

Built with React 18, TypeScript, ReactFlow, Socket.IO, Node, Express, OpenAI, and Vite. The live demo is linked above.