FlowForge
The visual Mermaid editor that lives in VS Code
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FlowForge - The visual Mermaid editor that lives in VS Code

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FlowForge is an open-source visual Mermaid editor for VS Code. Open a `.mmd` file and build diagrams on an infinite canvas: drag nodes, connect edges, and edit properties while Mermaid source stays in sync. Your diagrams remain plain, portable, Git-friendly Mermaid files — easy for teammates, Mermaid tools, and AI assistants to read and edit.

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I built FlowForge because Mermaid is great for keeping architecture diagrams in version control, but editing diagram syntax by hand can interrupt the way you think through a system. I wanted the best of both worlds: a visual canvas for quickly mapping ideas, and clean Mermaid source that stays portable, reviewable in Git, and usable anywhere Mermaid works. FlowForge lives inside VS Code, so the diagram can sit beside the code it explains. The project is open source and still evolving. I would love to hear which Mermaid workflows feel most painful today, and what would make FlowForge genuinely useful in your daily work.