Proto.io AlternativesWireframing & UI Design Tools like Proto.io

Sites and apps similar to Proto.io include Napkins.dev, which is free and open source. Other options are Frame0, Balsamiq Wireframes, Wireflow and InVision. Prototyping Tools like Proto.io are a crowded field, with more than 25 alternatives for Mac, Windows, self-hosting, Linux and iPhone.

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Alternatives
Proto.io alternatives page was last updated

Alternatives list

  1. Napkins.dev icon
     16 likes

    An open source wireframe to app tool powered by Llama 3.2 vision. Upload a screenshot of a simple site/design & get code.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    Good alternative?
     
  2. Frame0 icon
     15 likes

    Sketch your app ideas without stress Make hand-drawn style wireframes quickly and easily.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Good alternative?
     
  3. Low-fidelity UI wireframing tool simulating sketching experience, optimized for speed with Quick Add, built for collaboration, drag-n-drop simplicity, exportable wireframes to PNG/PDF, interactive prototypes via linking, hundreds of UI components, reusable symbols, and more.

    78 Balsamiq Wireframes alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Online
    • Jira
    • Confluence
    Good alternative?
     
  4. Wireflow icon
     23 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 type

    Platforms

    • Online
    • Self-Hosted
    Good alternative?
     
  5. InVision icon
     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
    Good alternative?
     
  6. Marvel icon
     27 likes

    A collaborative design tool offering wireframing, prototyping, and design specs creation in a single browser-based platform. Integrate seamlessly with your workflow via API, sync with Sketch and Photoshop, and utilize a vast library of assets. Streamline design-to-dev with automated code generation.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    • Apple TV
    • Messages
    • Software as a Service (SaaS)
    • GB flagUnited Kingdom
    Marvel screenshot 1
    Good alternative?
     
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  7. 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)
    Good alternative?
     
  8. Studio.Design icon
     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.

    79 Studio.Design alternatives

    Cost / License

    • Freemium
    • Proprietary

    Platforms

    • Online
    Good alternative?
     
  9. Flinto icon
     7 likes

    Flinto for Mac is a comprehensive app prototyping tool that allows you to create anything from simple tap-through prototypes, to comprehensive prototypes with impressive interactions. We’ve carefully designed Flinto for Mac to minimize complexity.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    Good alternative?
     
  10. Justinmind icon
     9 likes

    Justinmind is the best solution to prototype any web or mobile app you can think of. You can define websites and apps for Web, iOS, and Android with our intuitive drag-and-drop interface. No code involved.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    Good alternative?
     
  11. NinjaMock icon
     9 likes

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

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Online
    Good alternative?
     
12 of 30 Proto.io alternatives