About This Site
Free, open-source diagram engine with AI, Mermaid.js support, and Figma vector export. OpenFlowKit is a 100% free, open-source diagram engine designed for engineers, architects, and product teams. It allows users to create professional architecture diagrams and flowcharts using either a visual drag-and-drop interface or 'Diagram as Code' with Mermaid.js and a type-safe DSL. Powered by React Flow, it offers a local-first experience where data stays on the user's machine, requiring no signup or cloud synchronization. It also features an AI assistant called Flowpilot for chat-based diagram editing and a unique Figma export that provides editable vector shapes.
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Key Features AI
Core Features
Diagram as Code (Mermaid.js and type-safe DSL support)
Flowpilot AI Assistant for natural language diagramming
High-fidelity Figma Export (editable vectors and text)
Local-first architecture for maximum privacy
One-click auto-layout for complex systems
Fully customizable nodes, edges, and themes
Advantages
100% Free and MIT licensed with no hidden tiers
No login, signup, or tracking required
Data remains private on the local machine
Superior Figma integration compared to standard screenshot exports
Supports developer-friendly Mermaid.js syntax
缺点：Currently in Public Beta with some features still 'Under Construction'
缺点：Requires users to provide their own API key for AI features
缺点：Lacks native cloud sync for those who prefer cross-device collaboration
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