Solo Founder. Building dim0.net for visual thinking and AI work

leetcode

gumroad

github

Quang Lee  • Peerlist

I kept hitting the same wall. React Flow is headless and styleless (great) — but it renders to the DOM and gets sluggish past a couple thousand nodes. tldraw and Excalidraw render to a canvas and stay fast, but you take their UI and their look, or you fight it.canvas-harness is the missing corner: a canvas-rendered node-graph library for React that's also headless and styleless. 10k nodes pan at ~80fps on an M1, and it ships no UI and no styles — every color, font, and node type is yours.It's the engine I pulled out of <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://dim0.net">dim0.net</a> (an AI thinking canvas), so it's already running a real product. Comes with undo/redo, a spatial index, an AI context export, and a typed op log for collab — out of the box.MIT, TypeScript-first.

canvas-harness

Dim0 is an open-source AI canvas for visual thinking and AI work - where notes, documents, code, widgets, and an AI agent all live together on one board.Your research, notes, diagrams, and AI chats live in different tools. Dim0 puts them on one canvas.Built for researchers, founders, and builders who think in connections, not bullet points.<h3>Key Features</h3><ul><li>Infinite canvas - shapes, connectors, and text nodes with markdown support</li><li>Rich text notes - full document editing with math, code blocks, and slash commands</li><li>Executable code nodes - write and run code inside sandboxed graph nodes</li><li>Live widgets - generate interactive HTML/JS charts, visual explainers, and dashboards on the board</li><li>Mind maps and diagrams - turn notes into auto-laid out schemas and flowcharts in one click</li><li>Board-native AI agent - reads your canvas context, searches the web, runs code, and creates nodes directly on the board</li><li>Nested boards - organize large workspaces hierarchically</li><li>Presentation mode - frame and present directly from the canvas, no slides needed</li><li>Semantic search - find anything across your board by meaning, not just keyword</li><li>Multi-model - OpenAI, Claude, Gemini, Mistral, DeepSeek and more</li><li>Open source, self-hostable, MIT licensed</li></ul>