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DiagramLab - Mermaid/PlantUML

DiagramLab - Mermaid/PlantUML

Native macOS app for Mermaid & PlantUML diagrams

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DiagramLab turns diagram code into polished visuals—fast. Write Mermaid or PlantUML in a clean, developer‑friendly editor and see the result instantly with a live preview. Great for documentation, architecture notes, UML, and README diagrams. FEATURES • Mermaid + PlantUML support (choose per project) • Live preview: Split / Code / Preview modes • Helpful error reporting with line-focused feedback • Zoom controls for detailed diagrams • Export to PNG, JPG, SVG, PDF, or HTML
DiagramLab - Mermaid/PlantUML gallery image
DiagramLab - Mermaid/PlantUML gallery image
DiagramLab - Mermaid/PlantUML gallery image
DiagramLab - Mermaid/PlantUML gallery image
DiagramLab - Mermaid/PlantUML gallery image
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Launch tags:Design Tools•Tech•Maker Tools
Launch Team
Anima Playground
AI with an Eye for Design
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What do you think? …

ITCOREX
Maker
📌
Hey Product Hunt! 👋 Super excited to launch DiagramLab – a native macOS app for creating beautiful diagrams with Mermaid & PlantUML. No more juggling between browsers and text editors. Just write your code, see instant previews, and export anywhere. 🎉 Launch special: $0.99 until January 25th (normally $9.99) What diagrams do you create most often? Would love to hear what features you'd want to see next!