Alternatives to Susy for all platforms with any license

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Development

Indie / Classic

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  • Bootstrap icon

    Bootstrap

    Bootstrap is a open-source collection of tools for creating browser sites and applications. It contains HTML and CSS-based design templates for typography, forms, buttons, charts, navigation and other interface components, as well as...

    Open Source Self-Hosted HTML5 Boilerplate JavaScript

  • Foundation icon

    Foundation

    Foundation is an easy to use, powerful, and flexible framework for building rapid prototypes and production code on any kind of device.

    Open Source Web / Cloud

  • Semantic UI icon

    Semantic UI

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

    Open Source Web / Cloud

  • UIKit icon

    UIKit

    A lightweight and modular front-end framework for developing fast and powerful web interfaces. ui framework full HTML / CSS, javascript component , form, theme , dropdown , responsive ... More full than bootstrap or foundation

    Open Source Web / Cloud

  • Materialize icon

    Materialize

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

    Open Source Web / Cloud

  • Skeleton icon

    Skeleton

    Skeleton is a small collection of CSS & JS files that can help you rapidly develop sites that look beautiful at any size, be it a 17" laptop screen or an iPhone. Skeleton is built on three core principles: - Responsive...

    Open Source Web / Cloud

  • jQuery Mobile icon

    jQuery Mobile

    A unified, HTML5-based user interface system for all popular mobile device platforms, built on the rock-solid jQuery and jQuery UI foundation. Its lightweight code is built with progressive enhancement, and has a flexible, easily...

    Open Source Web / Cloud jQuery

  • Purecss icon

    Purecss

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

    Open Source Web / Cloud

  • Metro UI CSS icon

    Metro UI CSS

    Metro UI CSS a set of styles to create a site with an interface similar to Windows 8 .

    Open Source Web / Cloud LESS jQuery

  • Bulma icon

    Bulma

    A modern CSS framework based on Flexbox.

    Open Source Web / Cloud Self-Hosted

  • Mobile Angular UI icon

    Mobile Angular UI

    Mobile Angular UI is a mobile UI framework just like Sencha Touch or jQuery Mobile. If you know Angular JS and Twitter Bootstrap you already know it!

    Open Source Self-Hosted

  • Gridlex icon

    Gridlex

    Simple. Robust. Responsive. Flexible. Based on Flexbox (CSS Flexible Box Layout Module), Gridlex is a very simple css grid system to quickly create modern layouts and submodules.

    Open Source Web / Cloud Self-Hosted

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  • GroundworkCSS icon

    GroundworkCSS

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

    Open Source Web / Cloud Self-Hosted

  • MUI icon

    MUI

    MUI is a lightweight HTML/CSS/JS framework that follows Google's Material Design guidelines.

    Open Source Web / Cloud

  • metro-bootstrap

    Simple bootstrap from Twitter with Metro style.

    Open Source Web / Cloud Bootstrap

  • Flat UI Pro icon

    Flat UI Pro

    Flat UI Pro is made on the basis of Twitter Bootstrap in a stunning flat-style, and the kit also includes a PSD version for designers. Flat UI Pro contains a huge number of basic components, icons and glyphs.

    Commercial Web / Cloud

  • Topcoat icon

    Topcoat

    Topcoat is a brand new open source CSS library designed to help developers build web apps with an emphasis on speed. It evolved from the Adobe design language developed for Brackets, Edge Reflow, and feedback from the PhoneGap app...

    Open Source Mac Windows Linux Web / Cloud

  • Blaze CSS icon

    Blaze CSS

    Open source modular CSS framework providing great structure for building websites quickly.

    Open Source Mac Windows Linux Self-Hosted

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  • yeti.css icon

    yeti.css

    yeti.css is a pattern library consisting of lightweight, reusable modules. It has been built to reflect &yet's visual and branding guidelines.

    Open Source Mac Windows Linux Self-Hosted

  • HTML KickStart

    HTML KickStart is a ultra–lean set of HTML5, CSS, and jQuery (javascript) files, layouts, and elements designed to give you a headstart and save you a lot of hours on your next web project.

    Free Web / Cloud

  • Refills

    Refills are prepackaged patterns and components, built on top of Bourbon, Bitters and Neat.

    Open Source Web / Cloud

  • The Goldilocks Approach icon

    The Goldilocks Approach

    The Goldilocks Approach to Responsive Web Design - A good starting point for design that takes device resolution out of the equation.

    Open Source Web / Cloud

  • Blueprint icon

    Blueprint

    Welcome to Blueprint! This is a CSS framework designed to cut down on your CSS development time. It gives you a solid foundation to build your own CSS on. Here are some of the features BP provides out-of-the-box: An easily...

    Open Source Web / Cloud

  • Responsable icon

    Responsable

    Responsable is a responsive HTML CSS LESS SCSS framework with clean markup, normalized CSS, and responsive images. It allows for nested columns for easy grid nesting and customization, and provides base styles for forms, tables, and...

    Open Source Mac Windows Linux

    • Discontinued The official website is no longer available.
  • Material Design Lite icon

    Material Design Lite

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

    Open Source Web / Cloud GitHub

  • Picnicss

    Advantages Only CSS3 is needed and your HTML5 stays highly semantic*. Under 3kb when minimized and gzipped and under 5kb with all plugins. Normalize.css is used as a base, achieving a solid foundation. Support: IE 9+ and others....

    Open Source Web / Cloud

  • 320 and Up

    The ‘tiny screen first’ responsive boilerplate.

    Open Source Web / Cloud

  • Amazium icon

    Amazium

    960 grid system with 12 columns for Responsive Web Design. PSD file which has the 960 grid setup for you based on 32px gutters/margins. Offsetting columns - if you need to position a column over by say 2 columns. Four main media...

    Free Web / Cloud

  • Juiced (a Flexbox CSS Framework) icon

    Juiced (a Flexbox CSS Framework)

    Juiced has many of the same layout features that you know and love, but improves upon them with better mobile targeting, custom column ordering, better alignment options, understandable HTML, and less boilerplate styles. Juiced...

    Open Source Web / Cloud Self-Hosted

  • Flexbox Grid

    A grid system based on the flex display property.

    Open Source Web / Cloud Self-Hosted

  • Sassy-validation

    Sassy-validation is a Sass data type validation library. Validate inputted data or don’t Sass at all ! Sassy-validation is a handy addition for every Sass project which uses @functions and/or @mixins.

    Open Source Mac Windows Linux Web / Cloud Android iPhone

  • Golden Grid System

    A grid system for responsive web design. Includes folding columns, elastic gutters, a zoomable baseline grid, and a delightful grid overlay script.

    Open Source Web / Cloud

  • Wee icon

    Wee

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

    Open Source Web / Cloud

  • Less Framework icon

    Less Framework

    Less Framework is a CSS grid system for designing adaptive web­sites. It contains 4 layouts and 3 sets of typography presets, all based on a single grid.

    Open Source Web / Cloud

  • inuit.css icon

    inuit.css

    inuit.css is a lightweight, constantly updated CSS framework which provides you with a pragmatic and feature-rich starting point for all your projects. It is crammed full of useful snippets, best practices and has additional...

    Open Source Web / Cloud

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