The Best 20 Principle Alternatives

  • Concept.ly icon

    Concept.ly

    Free web and mobile mockup tool. Transform your design and mockups into clickable interactive applications. Perfect way to validate ideas faster with lean startup thinking. Best tool for quick prototyping.

    Freemium Web

  • MockFlow icon

    MockFlow

    Nothing to download/install, create and access your mockups from anywhere. Add pages with templates and define links to present a clickable prototype. Our components are of medium-fidelity not very sketchy or look too real.

    Freemium Web

  • Origami Studio icon

    Origami Studio

    Origami Studio is a free design tool built by Facebook designers for creating interactive UI prototypes. An elegant, layer-based interface allows designers to repaidly...

    Free Mac OS X Android iPhone

  • WireframeSketcher icon

    WireframeSketcher

    WireframeSketcher is a software tool that helps quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It comes both as a plug-in...

    Commercial Mac OS X Windows Linux Eclipse

  • Framer icon

    Framer

    Framer combines the power of code with the ease of visual editing. Prototype beautiful microinteractions or realistic apps. It’s time to design with development in mind.

    Commercial Mac OS X

  • Atomic icon

    Atomic

    Work your way up from a blank canvas, or pull in designs from Photoshop or Sketch. Lay out your states and instantly animate between them, without coding a thing. Share...

    Freemium Web

  • HotGloo icon

    HotGloo

    HotGloo is a UX, wireframe and prototyping tool designed to build wireframes for web, mobile and wearables. Create and share fully interactive prototypes with your team and clients and gather feedback on the process. .

    Commercial Mac OS X Windows Linux Web

  • Flinto icon

    Flinto

    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.

    Commercial

  • Pixate icon

    Pixate

    Pixate generates 100% native prototypes, so you can experience your ideas on device as if they’re completely real.

    Freemium Mac OS X Windows Android iPhone Web

  • STUDIO icon

    STUDIO

    Build your idea into a product. Design and programming skills are no longer necessary to create a product. With STUDIO, you can make your idea into a real product...

    Freemium Web

  • Adobe Comp CC icon

    Adobe Comp CC

    Easily lay out ideas and create mock-ups on mobile with real assets like photos, text, shapes and fonts.

    Free Android iPhone Android Tablet iPad

  • Moqhub icon

    Moqhub

    Upload your designs,mockups or wireframes by file or by URL snapshot, organize them and connect them to web prototypes. Share them with friends, colleagues and clients...

    Freemium Web

  • Mockup.io icon

    Mockup.io

    A web-based tool to visualize and collaborate on mobile app design and prototypes with the team and clients.

    Free Android iPhone Android Tablet iPad Android Wear Apple Watch

  • Shotbrander icon

    Shotbrander

    Shotbrander.com uses industry-standard visual effect pipeline on the back-end to deliver highly customizable videos. With this tool high quality branded video content is...

    Freemium