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AI · October 19, 2026

Whiteboard

the open-source IDE for thoughtful software design

Whiteboard launched on October 19, 2026 with 79 votes, #266 of 3,373 launches that month and more than 95% of that year's launches.

Visit dev.fast ↗Whiteboard alternativestop 8% of October 2026

What it does

Whiteboard is a canvas for thoughtful software development. Critique interactive visualizations, diffs, and agent trajectories, all from one interface.

Whiteboard is an open-source canvas for thoughtful software development. Critique interactive visualizations, diffs, and agent trajectories, all from one interface.

⑂ codex/search-on-main · 77 files · +4.7k -446 · b634b0f2 ← c9ee0c9f An animated example. A developer reads a Whiteboard review of a diff search API, selects the design section, copies it for their coding agent, and asks the agent to clarify the data flow. The agent draws a sequence diagram. The developer opens one step and expands its pseudocode summary into the full source. Then the developer selects the diagram and asks about the control flow. The agent paints two call trees, and the developer opens the source of one call. Hosted Whiteboard. Increase velocity for your whole team by reviewing code like an architect. The diff shows folded imports, then scrolls to a function summarized as…from dev.fast

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