The Best 75 Fluid UI Alternatives

  • Apache OpenOffice Draw icon

    Apache OpenOffice Draw

    draw, part of the apache openoffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams.

    Free Open Source Mac OS X Windows Linux

  • ProcessOn icon

    ProcessOn

    Free html-5 based on-line diagrams design, an ideal tool for visual communication .

    Free Mac OS X Windows Linux Chrome OS Web

  • Proto.io icon

    Proto.io

    Create fully-interactive high-fidelity prototypes that look and work exactly like your app should. No coding required. Companies like IDEO, Disney, Paypal, Airbnb and more use Proto.io.

    Commercial Web

  • Mockplus icon

    Mockplus

    Mockplus is a desktop-based prototyping tool. It can be used to create wireframes/mockups/prototypes for any mobile and web apps with ease. This tool will make UI/UX desingers prototype faster, smarter and easier.

    Commercial Mac OS X Windows

  • Mockup Designer icon

    Mockup Designer

    Mockup Designer, built with Backbone, Backbone-LocalStorage and Html2Canvas, is a super-easy-to-use mockup tool that uses the local storage of your browser as its...

    Free Open Source Web

  • Justinmind icon

    Justinmind

    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...

    Commercial

  • Pidoco icon

    Pidoco

    Quickly create, share and simulate professional interactive wireframes, mock-ups and UI prototypes online without programming.

    Commercial Mac OS X Windows Linux Web

  • 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

  • Mockup Builder icon

    Mockup Builder

    Design your software or website mockups within minutes. Mockup Builder is a new look to solve old problem with prototyping and sharing sketches with customers. This...

    Freemium Web

  • ProjectHuddle icon

    ProjectHuddle

    Use your existing WordPress site to get feedback on your design projects. Upload your design images, wireframes, mockups, logo sketches, photography and more. Gather comments directly on top of your designs.

    Commercial Self-Hosted Wordpress

    Customizable Real time collaboration
  • Flairbuilder icon

    Flairbuilder

    FlairBuilder is a user interface prototyping tool for easy authoring of interactive website wireframes, mockups and GUI prototypes.

    Commercial Mac OS X Windows Linux

  • IYOPRO icon

    IYOPRO

    IYOPRO, Improve your Processes, is a professional online BPM and workflow system that utilizes the BPMN 2.0 standard. Run it in less than one minute - without installation - always in the latest version.

    Freemium Mac OS X Windows Linux 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

  • SwordSoft Layout icon

    SwordSoft Layout

    SwordSoft Layout is an desktop application that makes it very easy for you to create, preview, and manage mockups of your website, mobile application or desktop...

    Commercial Mac OS X Windows

  • Prototype Composer icon

    Prototype Composer

    Serena Prototype Composer - the best agile application prototyping tool is now free! View the demo, take the product tour, or download it free today.

    Freemium Windows

  • 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

  • MockupTiger icon

    MockupTiger

    MockupTiger is a web based application that helps you to build fluid wireframes, mockups or prototypes for your next web application or desktop software. It has a...

    Commercial Windows Linux Android iPhone Web