Mind maps, flowcharts, UML diagrams — all free, all in your browser. No sign-up, no downloads, no limits.
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Brainstorm and organize ideas in a flexible tree structure.
Design process flows and swimlanes with drag-and-drop nodes.
Generate UML and technical diagrams from simple text, powered by Mermaid.
Every tool shares the same promise: free, private, and instant.
Every feature, no usage limits, no paywalls, no "pro" tier. Forever.
Open a tool and start creating instantly. No email, no password, no account.
Everything is saved locally in your browser. No data ever leaves your device.
Download as PNG, SVG, JSON, and more. Share or edit in other tools.
Built-in dark mode and multiple themes for comfortable editing day or night.
Once loaded, every editor keeps working without an internet connection.
Pick the right tool for the job — or use all three.
Capture ideas, plan projects, take meeting notes, and organize study material.
Try itMap out business processes, decision trees, algorithms, and swimlane diagrams.
Try itDocument class structures, sequence flows, database schemas, and state machines.
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