Whiteboard
In short: Whiteboard is a open-source coding AI tool. YC W26 MIT desktop canvas where Claude Code, Codex and friends draw sequence diagrams, semantic diffs and decision logs that jump to source (Code OSS + LSP). Free/local; you cannot edit files inside it yet, and multi-repo reviews are rough. Best as a review surface for agent-written PRs, not a replacement IDE. X Buzz Score: 21/100 (9 posts in 7 days).
Verdict: YC W26 MIT desktop canvas where Claude Code, Codex and friends draw sequence diagrams, semantic diffs and decision logs that jump to source (Code OSS + LSP). Free/local; you cannot edit files inside it yet, and multi-repo reviews are rough. Best as a review surface for agent-written PRs, not a replacement IDE.
Use this if you review big agent-written changes and want diagrams and diffs linked to code instead of a 40-file wall of text.
Live X Buzz Score
X 21/100 Quiet updated 23 Oct, 09:24 HKT
Daily X posts, last 7 days (oldest → today): 0 · 1 · 1 · 1 · 4 · 2 · 0. Score parts: volume 10/50, spike 0/25, engagement 11.4/25. Method
No standout X posts yet (we only show posts with 100+ likes or 10K+ views).
Alternatives
- Cursor: AI-first code editor (VS Code fork) with strong agent and tab completion.
- Claude Code: Terminal-based coding agent that edits and runs your repo.
- OpenCode 2.0: Open-source, model-agnostic terminal coding agent with a native TUI and multi-session support.
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FAQ
What is Whiteboard?
YC W26 MIT desktop canvas where Claude Code, Codex and friends draw sequence diagrams, semantic diffs and decision logs that jump to source (Code OSS + LSP). Free/local; you cannot edit files inside it yet, and multi-repo reviews are rough. Best as a review surface for agent-written PRs, not a replacement IDE.
Who should use Whiteboard?
Use Whiteboard if you review big agent-written changes and want diagrams and diffs linked to code instead of a 40-file wall of text.
Is Whiteboard free?
Whiteboard is listed as open-source.
What are alternatives to Whiteboard?
Alternatives include Cursor, Claude Code, OpenCode 2.0, Claude.
Discussion
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