Open Source Web-based Dia Alternatives

Dia is not available as a web app but there are some alternatives that runs in the browser with similar functionality. The best open source Online alternative is draw.io. If that doesn't suit you, our users have ranked more than 50 alternatives to Dia and nine of them are open source and available as a web app so hopefully you can find a suitable replacement. Other interesting open source Online alternatives to Dia are Excalidraw, PlantUML, quiver diagram editor and Kroki.

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Alternatives list

  1. draw.io icon

    draw.io

     1019 likes

    Feature-rich diagram editor offering privacy-focused, ad-free experience with real-time collaboration, offline usage, dark mode, and cloud storage support. No registration required and compatible with various diagram formats, it excels in simplicity by not tracking user data.

    138 draw.io alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Chrome OS
    • Notion
    • Self-Hosted
    • Nextcloud
    • Microsoft SharePoint
    • Flathub
    • Microsoft OneDrive
    • PortableApps.com
    • Google Drive
    • Google Docs
    • Microsoft Teams
    • Google Slides
    • Flatpak
    • Google Sheets
    Use the diagram editor in dark mode. Go to app.diagrams.net/?splash=0&ui=dark
     
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    4
    draw.io vs Dia Comments
    Bryan McKnight
    Negative
    2

    Draw.io is a decent alternative, but is too different. Mainly the problem is that Dia is an application program for Windows, while draw.io is a mere Web app. I know Web apps are popular these days, but they're not the same as actual applications, and personally I don't like how many companies seem to be attempting to make all programs Web apps or "online" "programs".

    Guest
    Positive
    2

    Easy to use. Free and open source. can install on my pc (linux mint) Better application than Dia, that I can use online as well on my PC. Very Good !

    Review by a new / low-activity user.
    Guest
    Positive
    3

    Draw.io is very usable, with a sleek interface, tons of stencils/shapes, and the ability to export to various file formats. I have used for home and work projects and have been pleased with the results. I would even go as far as saying it's more useful than MS Visio if your requirements aren't too technical.

    Review by a new / low-activity user.
    3 of 4 comments
    • draw.io is Free and Open SourceDia is also Free and Open Source
    • draw.io is Privacy focusedDia is not according to our users
  2. Excalidraw icon

    Excalidraw

     104 likes

    Excalidraw is an open-source whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them. Available directly online as a web app and also through CodeSandbox to easily see how the code works, and the app is available for self-hosting.

    89 Excalidraw alternatives

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application types

    Platforms

    • Online
    • Self-Hosted
    Excalidraw screenshot 1
     
  4. PlantUML icon

    PlantUML

     119 likes

    PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others.

    116 PlantUML alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • Chrome OS
    Common PlantUML JAR GUI application that will render text file into image.
     
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    2
    PlantUML vs Dia Comments
    Guest
    Negative
    6

    Not a GUI diagramming tool. By this logic graphviz is an alternative to Dia.

    Review by a new / low-activity user.
    Guest
    Negative
    0

    PlantUML has no way to make a diagram or chart without knowing command line and learning a whole new markup language.

    Review by a new / low-activity user.
    • PlantUML is Free and Open SourceDia is also Free and Open Source
  5. quiver diagram editor icon

    quiver diagram editor

     10 likes

    Efficient web-based tool for constructing high-quality commutative diagrams. Offers LaTeX export with embedded links, intuitive interface supporting both mouse and keyboard inputs, and features like multiple selections, macro support, and smart label alignment.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    quiver diagram editor screenshot 1
     
  6. Kroki icon

    Kroki

     7 likes

    Creates diagrams from textual descriptions! It provides a unified API with support for BlockDiag, BPMN, Bytefield, C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob, UMLet, Vega, Vega-Lite, WaveDrom.

    25 Kroki alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Online
    • Self-Hosted
    Kroki screenshot 1
     
  7. Wireflow icon

    Wireflow

     22 likes

    Feature-rich, open-source Wireflow offers a collaborative platform for online creation of complex user flow prototypes. Ideal for team work in UI design, wireframing, and mind mapping, promoting idea sharing in real-time environment aided by modern whiteboard features.

    118 Wireflow alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Online
    • Self-Hosted
    Wireflow screenshot 1
     
  9. Diagramo icon

    Diagramo

     20 likes

    Diagramo is an online flowchart software

    • diagrams (create, edit and share)
    • organization charts (create, edit and share)
    • network diagrams (create, edit and share)
    • graphs (create, edit and share).

    Cost / License

    • Free
    • Open Source

    Platforms

    • Online
    Diagramo screenshot 1
     
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    1
    Diagramo vs Dia Comments
    Joel Stienlet
    Positive
    0

    Intuitive interface, nice rendering, web-based so can be used both locally and on a website

    Review by a new / low-activity user.
    • Diagramo is Free and Open SourceDia is also Free and Open Source
  10. PathVisio icon

    PathVisio

     8 likes

    PathVisio is a free open-source pathway analysis and drawing software that allows drawing, editing and analysing biological pathways.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    PathVisio screenshot 1
     
  11. T

    tableaunoir

     1 like

    It's an OpenSource WhiteBoard app with very useful features ("magnets"). There's a running instance at github.io. You can save & reopen your boards...

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • HP webOS
    • BSD
    magnets on top of one another
     
9 of 9 Dia alternatives