Whiteboard

For developers accustomed to pure keyboard operation and pursuing extreme coding speed, Whiteboard's canvas mode may require adaptation.

Whiteboard is an open-source IDE built for thoughtful software design.

Whiteboard's core feature is providing a canvas where developers can critically examine interactive visualizations, code diffs, and AI agent execution trajectories within the same interface.

Whiteboard embeds interactive visualization into the development environment as a first-class capability.

Whiteboard explicitly lists agent trajectories as a core review object.

Whiteboard chose the open-source route.

Whiteboard is categorized on Product Hunt under tags such as Open Source, Software Engineering, and Artificial Intelligence.

Whiteboard is still at an early stage and has limited visibility.

Whiteboard is better suited to engineers who frequently do architecture design and technical reviews, Tech Leads who need to explain complex system behavior to their teams, and teams exploring AI agent collaboration workflows.

Whiteboard can be combined with tools like Greptile to run automated reviewers on small changes and escalate changes requiring human judgment to a Whiteboard session.

Whiteboard's diff viewer by default summarizes large newly added functions as pseudocode and collapses or hides unit tests and large documentation changes, with full customization available through a WASM-based plugin system.

Whiteboard provides an SDK for AI agents, allowing agents to draw on a canvas within the application to describe their work, and offers a decision log feature to record agent execution traces.

Engineers at companies such as Salesforce and Modal are already using Whiteboard as a review tool for architectural reviews or spec-level changes.

Whiteboard is a desktop application backed by YC W26 investment and open-sourced under the MIT license, built by four former tech leads: Sid, Alex, Ketan, and Milan.

The Whiteboard desktop application is open-sourced under the MIT license and currently supports macOS and Linux platforms.

Whiteboard is built on CodeOSS (the open-source core of VSCode), giving users access to VSCode keybindings and LSP support.

Clicking on references in sequence diagrams, entity-relationship diagrams, or agent execution traces navigates directly to the corresponding underlying code.

Whiteboard has written a semantic-level, AST-aware diff viewer in Rust; the diff library, diffr, has been separately open-sourced.

Whiteboard has 3 comments on Product Hunt.

Whiteboard received 76 upvotes on Product Hunt and ranked 15th for the day.