Compare the Top Free Prototyping Software as of December 2025

What is Free Prototyping Software?

Prototyping software allows designers and developers to create interactive models of websites, applications, or systems before they are fully built. These tools enable users to visualize and test ideas quickly, helping to refine concepts and gather feedback early in the design process. They often provide drag-and-drop interfaces, allowing users to assemble prototypes without needing advanced coding skills. Prototyping software can simulate user interactions and workflows, providing a realistic preview of how the final product will function. This iterative approach saves time and resources by identifying design issues and potential improvements before development begins. Compare and read user reviews of the best Free Prototyping software currently available using the table below. This list is updated regularly.

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    Miro

    Miro

    Miro

    Keep your team's minds in sync with Miro (formerly RealtimeBoard and AWW app). A virtual whiteboard and remote collaboration tool, Miro helps cross-functional teams work more efficiently together to build great things. The platform allows teams to ideate, visualize, and share ideas without any boundaries. It comes with over 200 pre-made templates for capturing and visualizing ideas, collaboration tools such as comments, chat, screen sharing, and video chat, and integrations with popular business tools. Miro AI. You and your team, supercharged. You're here to create the next big thing and we're here to help. Unlock the power of your ideas with Miro AI – your new launchpad for creativity, collaboration, and productivity.
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    Starting Price: $8 per month
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    Fluid UI

    Fluid UI

    Fluid Software

    Designer, developer, product owner or product visionary? If you want to build a successful product, you need to start by successfully communicating your vision. With Fluid UI, ideas can be prototyped in minutes and shared instantly. Sharing, feedback and collaboration are all built in. Start with a free account and unlock your creativity. What’s in your mind and what people understand are often worlds apart. A good prototype paints a thousand pictures. It connects the dots for everyone to see. Time is short too. There’s a lot to get done. That’s why Fluid UI focuses on fast, easy and fun. We know it’s the right way to present your ideas successfully to the world. Use a comprehensive set of pre-built UI Kits for Material Design, iOS, Wireframing and more. Real-time collaboration lets your entire team work together on the same prototype at the same time. Visually linking your prototype together makes adding interactions fast, fun and productive.
    Starting Price: $15 per user per month
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