AI product Open source

Whiteboard

Whiteboard is an open-source desktop app for humans and coding agents to architect software in a shared workspace. It connects to agents such as Claude Code and Codex, giving them an SDK for drawing diagrams and describing their work on an in-app canvas. Visualizations including sequence diagrams, entity-relationship diagrams, and agent-trace quotations can link directly to underlying code, while the code-review interface provides VS Code keybindings and LSP support.

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Overview

Whiteboard includes a semantic, AST-aware diff viewer written in Rust. It summarizes large added functions as pseudocode and can collapse or hide changes such as tests and documentation; a WebAssembly-based plugin system makes these rules customizable. Its decision-log tools let agents query and link their traces so users can inspect requirements, implementation choices, and autonomous decisions.

The app runs against local checkouts, is distributed for macOS, Windows, Ubuntu, and Fedora, and is licensed under the MIT License. It is self-hostable, although hosted team functionality is planned. Current limitations include no file editing within Whiteboard and limited support for reviewing multiple repositories together.

What Whiteboard is used for

1 use taken from transcripts — each links to the moment in the video.

  • A desktop canvas for designing software collaboratively with coding agents. It supports diagrams, code-aware diffs, navigation from diagram elements to code, and logs agent decisions.

Videos mentioning Whiteboard

1 in the library.