# Whiteboard

> Updated 2026-09-24 · type: tool · category: productivity-knowledge · status: active · rev 1

Whiteboard is a desktop canvas where developers and coding agents like Claude Code collaborate on software design, with AST-aware diffs and decision logging.

- Open source: yes (MIT)
- Self-hostable: yes
- Pricing model: free
- Best for: A developer who wants a shared design surface with their coding agent — where humans and Claude Code work through software design together, backed by AST-aware diffs and a log of decisions — rather than losing that reasoning in chat scrollback.
- Last verified: 2026-09-24

- **Canonical:** https://gtmstacker.com/registry/tool/whiteboard/
- **Source:** [devdotfast · GitHub](https://github.com/devdotfast/whiteboard)
- **Tags:** productivity-knowledge, project-ops, self-hostable, design-collaboration, coding-agents, semantic-diff
- **Repository:** https://github.com/devdotfast/whiteboard

## Is Whiteboard open source?

Yes, Whiteboard is open source under the MIT license.

## How much does Whiteboard cost?

Whiteboard is free to use.

## Can I self-host Whiteboard?

Yes, Whiteboard can be self-hosted (the source is available under the MIT license).


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Whiteboard is an MIT-licensed desktop canvas where humans and coding agents such as Claude Code collaborate on software design, with AST-aware semantic diffs and decision logging. It is actively shipping — 434 commits, 303 stars, created 2026-08-18, last pushed 2026-09-24. It self-hosts as a desktop app and serves as a shared design surface between developers and their agents.

## Provenance

- MIT (OSI-open); 303 stars, created 2026-08-18, last push 2026-09-24, 434 commits (fresh, actively shipping); an open-source desktop canvas where humans and coding agents (Claude Code) collaborate on software design, with AST-aware semantic diffs and decision logging (WebFetch 2026-09-24).
- Surfaced via studio discovery in the 2026-09-24 pass.
- Anti-hype note: a YC W26 tag was claimed but is not confirmed in the primary source, so no accelerator affiliation is stated. The verified facts stand on their own: MIT, 303 stars, 434 commits, real and actively shipping.
- Curated from the GTM Stacker signal registry (2026-09-24 pass); license/facts independently verified 2026-09-24.

## Why it matters for a GTM stack

The GTM read here is narrower than most entries — this is a dev-and-agent collaboration surface, not a revenue tool. But teams building agent-driven internal tooling hit a real problem: the design reasoning behind what an agent builds evaporates in chat scrollback. Whiteboard gives humans and coding agents like Claude Code a shared canvas to work through software design, with AST-aware semantic diffs so changes are legible at the structure level and decision logging so the "why" is retained. For an engineering-led growth team standardizing on coding agents, that shared surface is where design intent stays visible. The honest read: it is young (created 2026-08-18) though actively shipping, and the quality of the semantic diffs and decision log is best judged against your own repo before you adopt it as a team surface.