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Diagramming

Draw flowcharts, org charts, network diagrams and floor plans.

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Free diagramming tools

Every free tool in this category, by name.

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3 alternatives

  • Dia

    Open-source GTK diagram editor for flowcharts, UML, network and electrical diagrams.

    License: Open source
    • Windows
    • macOS
    • Linux
    Status: Active
    • SVG: saves only, partial fidelity. Exports SVG

    This replaces Microsoft Visio

  • draw.io

    Open-source diagramming app for flowcharts, UML, network and cloud diagrams, on the web, desktop or self-hosted.

    License: Open source
    • Windows
    • macOS
    • Linux
    • Web
    • Self-hosted
    Status: Active
    • VSDX: opens only, partial fidelity. Imports VSDX; no VSDX export in current releases
    • SVG: opens and saves, partial fidelity. SVG export is meant for embedding; it is not an SVG editor

    This replaces Lucidchart, Microsoft Visio and Miro

  • LibreOffice Draw

    Free vector drawing and diagram app in LibreOffice that imports PDFs for editing and exports to PDF, SVG and images.

    License: Open source
    • Windows
    • macOS
    • Linux
    Status: Active
    • PDF: opens and saves, partial fidelity. Imports PDFs as editable objects with layout shifts; exports PDF including PDF/A and fillable forms
    • VSDX: opens only, partial fidelity. Imports Visio drawings; shapes and text carry over but some stencils and styles do not
    • VSD: opens only, partial fidelity. Imports older Visio files with the same limits
    • SVG: opens and saves, full fidelity
    • CDR: opens only, partial fidelity. Imports CorelDRAW files through libcdr; effects and newer features may be lost

    This replaces Adobe Acrobat Pro, CorelDRAW and Microsoft Visio