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Draw.io (diagrams.net)

Diagramming · Free · since 2005 · open source

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Draw.io (diagrams.net) is a free, open-source diagramming tool that works in the browser with no account needed. It handles free, no account, confluence plugin, and many shapes, and it's best suited for anyone wanting free, full-featured diagramming. It has been around since 2005, giving it a 21-year head start in building out integrations and refining the product.

The core product is entirely free. Since it's open-source, you can self-host for free with no user limits.

pros

  • Open source and transparent
  • Includes Free as a core feature, purpose-built for diagramming workflows
  • Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
  • The core product is free with no paywalled essentials

cons

  • May lack some advanced features
  • Self-hosting is free but requires server maintenance and DevOps knowledge
  • Fewer built-in features means you may need additional tools to cover gaps
  • Ecosystem of third-party integrations is smaller than the market leaders in diagramming

top Draw.io (diagrams.net) alternatives

Mermaid JavaScript-based diagramming tool that renders diagrams from text definitions. Free Lucidchart Intelligent diagramming platform for flowcharts, wireframes, and technical diagrams. Free tldraw Open-source collaborative whiteboard with a friendly interface and embeddable SDK. Free FigJam Collaborative whiteboard from Figma for brainstorming, diagramming, and workshops. Free Eraser Technical design tool for architecture diagrams, design docs, and cloud diagrams. Free

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Draw.io (diagrams.net) compared

Mermaid vs Draw.io (diagrams.net) · Lucidchart vs Draw.io (diagrams.net) · Draw.io (diagrams.net) vs tldraw · Draw.io (diagrams.net) vs FigJam · Draw.io (diagrams.net) vs Eraser · Draw.io (diagrams.net) vs Eraser · Draw.io (diagrams.net) vs PlantUML

more diagramming tools

Mermaid JavaScript-based diagramming tool that renders diagrams from text definitions. Free Lucidchart Intelligent diagramming platform for flowcharts, wireframes, and technical diagrams. Free tldraw Open-source collaborative whiteboard with a friendly interface and embeddable SDK. Free FigJam Collaborative whiteboard from Figma for brainstorming, diagramming, and workshops. Free Eraser Technical design tool for architecture diagrams, design docs, and cloud diagrams. Free Eraser Technical diagramming tool for software architecture, system design, and engineering docs. Free