Whiteboard
An MIT-licensed open-source desktop IDE built on CodeOSS, designed for software comprehension and design in the era of AI-assisted development. Its core features include code-diagram synchronization, an AST-aware diff viewer, and a decision log for tracking architectural choices.
Timeline (last 90 days)
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'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 can be combined with tools like Greptile to run automated reviewers on small changes and escalate changes requiring human judgment to a Whiteboard session.
The team plans to charge enterprises in the future for a hosted web service that includes session management, trace storage, and multi-person collaborative review, while committing to keeping the product always self-hostable.
1 more timeline events
All Facts (10)
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.
50%UnverifiedThe Whiteboard desktop application is open-sourced under the MIT license and currently supports macOS and Linux platforms.
50%UnverifiedWhiteboard is built on CodeOSS (the open-source core of VSCode), giving users access to VSCode keybindings and LSP support.
50%UnverifiedClicking on references in sequence diagrams, entity-relationship diagrams, or agent execution traces navigates directly to the corresponding underlying code.
50%UnverifiedWhiteboard has written a semantic-level, AST-aware diff viewer in Rust; the diff library, diffr, has been separately open-sourced.
50%UnverifiedWhiteboard'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.
50%UnverifiedWhiteboard 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.
50%UnverifiedEngineers at companies such as Salesforce and Modal are already using Whiteboard as a review tool for architectural reviews or spec-level changes.
50%UnverifiedWhiteboard can be combined with tools like Greptile to run automated reviewers on small changes and escalate changes requiring human judgment to a Whiteboard session.
50%UnverifiedThe team plans to charge enterprises in the future for a hosted web service that includes session management, trace storage, and multi-person collaborative review, while committing to keeping the product always self-hostable.
50%