FrankenMermaid: Free Open-Source Native Mermaid Diagram Studio Lands on Mac App Store
doodlestein · x · 2026-09-01
FrankenMermaid by Jeffrey Emanuel is now on the Mac App Store — 100% free, no ads, no IAP, open-source (iOS version pending Apple review). It's a native Mermaid diagram studio pairing a syntax-highlighted editor with a live native preview, plus a broad sample library covering flowcharts, sequence diagrams, ER diagrams, Gantt charts and more.
Rendering uses a bundled Rust + WebAssembly engine, fully on-device: no account, no network, no data collection. Rendering controls cover theme, text size, corner radius and padding; an inspector exposes graph structure, and results export as files.
Related event: Open-Source Mermaid App FrankenMermaid Lands on Mac App Store(2 posts)→
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