Quoin

Native macOS WYSIWYG Markdown editor with tracked-changes review, native LaTeX math, and Mermaid diagrams

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Quoin is a native macOS WYSIWYG Markdown editor built with zero JavaScript that supports an in-file review loop — suggestions, comments, and tracked changes stored as plain CriticMarkup — plus native LaTeX math and Mermaid diagrams. It's aimed at macOS writers who need a review/track-changes workflow on Markdown documents.

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