Issue #811 · Sep 25, 2026
Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design
Whiteboard is an MIT-licensed desktop app built on a vendored Code OSS. In it, a coding agent such as Claude Code or Codex draws diagrams of its work that link straight to the code. Whiteboard adds a semantic diff viewer and a log of the decisions the agent made on its own. The goal is to let developers review agent-written changes without piling up "cognitive debt".