Show HN: Whiteboard (YC W26) – An open-source IDE for thoughtful software design

344 points · 124 comments on HN · read original →

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What commenters are saying

Commenters generally praised the project for addressing a real need in agentic coding workflows, specifically the gap between high-level architecture and implementation. The creator clarified it's free, OSS, and local-only, with a hosted solution being explored. Discussion centered on terminology: the author defended calling it an 'IDE' despite not supporting file editing, citing VS Code's dominance for code review. Technical suggestions included adding an LSP for diagrams, while others questioned whether this should be a standalone product or a feature of existing tools like MCP. The fake pen drawing animations and streaming diagrams were highlighted as innovative design choices.