# Whiteboard

> Review code changes through diagrams and semantic diffs

Whiteboard is an open-source desktop app for understanding software changes at the level of their architecture and behavior. It combines code review with diagrams, semantic diffs, and explanations that can be expanded into the underlying source. A coding agent can illustrate a flow or a set of changes, while a developer follows the relationships and checks the implementation. The app also helps inspect agent trajectories to understand how decisions led to the resulting code. Whiteboard is available in public beta for macOS, Windows, and Linux under the MIT license, with a workflow centered on local development and review.

## Listing details

- Canonical BetaNeon page: https://betaneon.com/products/whiteboard-dev-fast
- Official website: https://dev.fast/
- Category: Developer tools / Git & code review
- Status: In beta
- Topics: Code review, Coding, Desktop app, Diagrams, Open source
- Listing updated: 2026-11-05T14:13:02.753Z
- Information source: https://dev.fast/

This is a product introduction, not an endorsement. Confirm current availability, features, and prices on the official website. Community upvotes on BetaNeon are not star ratings.