Fluid UI
The World's #1 Wireframing & Prototyping Tool
Fluid UI launched on December 23, 2013 with 81 votes, #172 of 927 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 12 years on.
What it does
Free lifetime account. Simple to learn, quick to master. Design interactive prototypes for Android, iOS, web and desktop in minutes.
Please ensure you understand and agree with our data protection policy before using this site. 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…from fluidui.com
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