Free, open-source diagrams you and your agent edit together
A free, open-source diagram canvas: MIT, local-first, no account, in your browser. One canvas, five ways in. Draw it. Write it as code, or paste Mermaid, D2 or Structurizr. Ask any of 10 AI providers, or a local model. Hand it to your coding agent: Claude Code edits the canvas you have open, live, over MCP. Or pull it from a GitHub repo, every arrow citing its file and line. The CLI checks drift in CI, so diagrams keep up with your code.
OpenFlowKit 2 launched on Product Hunt on 2026-10-13 and has 78 upvotes and 5 comments so far.
This tool is open source.