Free Web-based Fluid UI Alternatives

There are many alternatives to Fluid UI as a web app if you are looking for a replacement. The best free Online alternative is draw.io, which is also Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Fluid UI and many of them are free and available as a web app so hopefully you can find a suitable replacement. Other interesting free Online alternatives to Fluid UI are Lucidchart, Wireflow, Moqups and InVision.

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Alternatives list

  1. draw.io icon

    draw.io

     1023 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.

    141 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
     
  2. Lucidchart icon

    Lucidchart

     538 likes

    Lucidchart is a cloud-based platform that promotes teamwork through diagramming, collaboration, and data visualization. It serves millions worldwide, offering flowcharts, UML, real-time collaboration, Visio support, and browser access. Designed for innovation and understanding, it integrates easily into workflows.

    77 Lucidchart alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    Lucidchart Templates and Examples: With hundreds of template examples to choose from, you can start diagramming in no time.
     
  4. 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.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Online
    • Self-Hosted
    Wireflow screenshot 1
     
  5. Moqups icon

    Moqups

     78 likes

    A streamlined web app that helps you create and collaborate in real-time on wireframes, mockups, diagrams and prototypes.

    91 Moqups alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Google Chrome
    • Mozilla Firefox
    Diagramming & Mapping
     
  6. InVision icon

    InVision

     69 likes

    We believe the screen is the most important place in the world. That’s why we are dedicated to helping you deliver the best possible digital product experience, with our platform and best practices from your peers.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    InVision screenshot 1
     
  7. Presentator.io icon

    Presentator.io

     8 likes

    Presentator is a free web application that allows you to present your designs in an easy, organized and interactive way.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    Presentator.io screenshot 1
     
  9. mydraft.cc icon

    mydraft.cc

     8 likes

    Open source wireframing tool written in typescript, react and redux.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
    ui
     
  10. Studio.Design icon

    Studio.Design

     9 likes

    Studio.Design is the site builder for designers. The browser app is packed with design features as intuitive as Figma, a CMS as simple as Notion, and one-click publishing to your domain. Now, you can finally turn any idea into a stunning website quickly and easily.

    76 Studio.Design alternatives

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    Studio.Design screenshot 1
     
  11. ProcessMaker icon

    ProcessMaker

     14 likes

    ProcessMaker is a cost effective and easy to use open source business process management (BPM) or workflow software application.

    100 ProcessMaker alternatives

    Cost / License

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    ProcessMaker screenshot 1
     
  12. 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
     
    |
    1
    Diagramo vs Fluid UI Comments
    Guest
    Negative
    0

    It's not a wireframing/mockup tool

    Review by a new / low-activity user.
    • Diagramo is Free and Open SourceFluid UI is Freemium and Proprietary
  13. NinjaMock icon

    NinjaMock

     9 likes

    NinjaMock is the faster, better and funnier way of making mockups.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    NinjaMock screenshot 1
     
  14. MockFlow icon

    MockFlow

     21 likes

    MockFlow accelerates early-stage product design and ideation with AI-powered wireframing, prototyping, and visual brainstorming. WireframePro and IdeaBoard enable teams to collaboratively transform initial concepts into professional, shareable wireframes and diagrams.

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Online
    • Software as a Service (SaaS)
    Wireframe faster, iterate better — MockFlow makes it easy to visualize and refine UI ideas with your team in real-time.
     
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