Alternatives to Flat UI Pro for all platforms with any license




Web / Online


Indie / Classic

Other Platforms

  • Bootstrap icon


    Bootstrap is a open-source collection of tools for creating browser sites and applications. It contains HTML and CSS-based design...

    Open Source Self-Hosted HTML5 Boilerplate JavaScript

  • Semantic UI icon

    Semantic UI

    Semantic empowers designers and developers by creating a shared vocabulary for UI.

    Open Source Web / Cloud

  • UIKit icon


    A lightweight and modular front-end framework for developing fast and powerful web interfaces. ui framework full HTML / CSS...

    Open Source Web / Cloud

  • HTML5 Boilerplate icon

    HTML5 Boilerplate

    A rock-solid default for HTML5 awesome. HTML5 Boilerplate is the professional badass's base HTML/CSS/JS template for a fast...

    Open Source Web / Cloud

  • Purecss icon


    A set of small, responsive CSS modules that you can use in every web project.

    Open Source Web / Cloud

  • Materialize icon


    Materialize is a modern responsive CSS framework based on Material Design by Google

    Open Source Web / Cloud

  • GroundworkCSS icon


    GroundworkCSS is a 100% free and open source responsive HTML5, CSS and JavaScript Framework.

    Open Source Web / Cloud Self-Hosted

  • Topcoat icon


    Topcoat is a brand new open source CSS library designed to help developers build web apps with an emphasis on speed. It evolved from...

    Open Source Mac Windows Linux Web / Cloud

  • Material Design Lite icon

    Material Design Lite

    Google's front-end web framework for building sites to the Material Design specification.

    Free Web / Cloud

  • Sassy-validation

    Sassy-validation is a Sass data type validation library. Validate inputted data or don’t Sass at all ! Sassy-validation is a...

    Open Source Mac Windows Linux Web / Cloud Android iPhone

  • Wee icon


    Lightweight front-end framework for logically building complex, responsive web projects.

    Open Source Web / Cloud

  • Gumby Framework icon

    Gumby Framework

    Create rapid and logical page layout and app prototypes with Gumby Framework, a flexible, responsive CSS framework, powered by Sass

    Open Source Web / Cloud

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  • 960 Grid System icon

    960 Grid System

    The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960...

    Open Source Mac Windows Linux Web / Cloud BSD

  • Fluid 960 Grid System

    The Fluid 960 Grid System templates have been built upon the work of Nathan Smith and his 960 Grid System using effects from the...

    Open Source Mac Windows Linux Web / Cloud BSD

  • Foldy960

    Foldy960 - A responsive version of the 960 grid, the Pvel way!

    Open Source Mac Windows Linux Web / Cloud BSD

  • Unsemantic CSS Framework

    Unsemantic is a fluid grid system that is the successor to the 960 Grid System. It works in a similar way, but instead of being a set...

    Open Source Mac Windows Linux Web / Cloud BSD

  • Kube Web Framework

    Kube is one of the world's most advanced and flexible frameworks. Kube helps you spend less time on routine tasks and more time...

    Open Source Web / Cloud

  • Slides Framework icon

    Slides Framework

    Slides is a simple and powerful HTML and CSS framework that lets you easily build beautiful static websites thanks to a flexible...

    Commercial Self-Hosted

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  • Cascade Framework icon

    Cascade Framework

    Although the overall look and feel are most definitely inspired by Twitter Bootstrap, Cascade framework is not just another Bootstrap...

    Free Web / Cloud

  • Variable Grid System

    The variable grid system is a quick way to generate an underlying CSS grid for your site. The CSS generated file is based on the 960...

    Free Web / Cloud

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