Top 9 Open-Source Alternatives to flexible.gs

Product categories

CSS Framework CSS Tools Design Tools Developer Tools Development Tools Javascript UI Libraries

Summary

The top open-source alternatives to flexible.gs are HTML KickStart, Bootstrap, and Purecss. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

HTML KickStart Landing Page
1

HTM

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.
Pricing:
- Open Source
#CSS Framework #Development Tools #Javascript UI Libraries
Bootstrap Landing Page
2

Bootstrap

Simple and flexible HTML, CSS, and JS for popular UI components and interactions
Pricing:
- Open Source
#CSS Framework #Development Tools #Design Tools 326 social mentions
Purecss Landing Page
3

Purecss

A set of small, responsive CSS modules that you can use in every web project.
Pricing:
- Open Source
#CSS Framework #Development Tools #Javascript UI Libraries 8 social mentions
Materialize CSS Landing Page
4

Materialize CSS

A modern responsive front-end framework based on Material Design
Pricing:
- Open Source
#CSS Framework #Development Tools #Design Tools 25 social mentions
Material UI Landing Page
5

Material UI

A CSS Framework and a Set of React Components that Implement Google's Material Design
Pricing:
- Open Source
#Design Tools #Development Tools #Developer Tools 75 social mentions
UIKit Landing Page
6

UIKit

A lightweight and modular front-end framework for developing fast and powerful web interfaces
Pricing:
- Open Source
#CSS Framework #Development Tools #Design Tools 20 social mentions
HTML5 Boilerplate Landing Page
7

HTML5 Boilerplate

A rock-solid default for HTML5 awesome.
Pricing:
- Open Source
#CSS Framework #Design Tools #Development Tools 17 social mentions
Foundation Landing Page
8

Foundation

The most advanced responsive front-end framework in the world
Pricing:
- Open Source
#CSS Framework #Design Tools #Development Tools 18 social mentions
Metro UI CSS Landing Page
9

Metro UI CSS

Metro UI CSS a set of styles to create a site with an interface similar to Windows 8.
Pricing:
- Open Source
#CSS Framework #Design Tools #Developer Tools