Responsive Open Source Projects

Tabler is free and open-source HTML Dashboard UI Kit built on Bootstrap

Customizable admin dashboard template based on Angular 10+

A modified web browser that helps in responsive web development. A web developer's must have dev-tool.

A fancy, easy-to-use and reactive self-hosted docker compose.yaml stack-oriented manager

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

Skeleton: A Dead Simple, Responsive Boilerplate for Mobile-Friendly Development

MJML: the only framework that makes responsive-email easy

High performance and SEO friendly lazy loader for images (responsive and normal), iframes and more, that detects any visibility changes triggered through user interaction, CSS or JavaScript without configuration.

Flat UI Free - Design Framework (html/css3/less/js). Flat UI is based on Bootstrap, a comfortable, responsive, and functional framework that simplifies the development of websites.

Simple, responsive, modern SVG Charts with zero dependencies

A free simple responsive HTML email template

Functional css for humans

Light and responsive lightbox script with focus on performance.

Spectre.css - A Lightweight, Responsive and Modern CSS Framework

Responsive dashboard templates 📊✨

A responsive image polyfill for <picture>, srcset, sizes, and more

List of awesome CSS frameworks in 2026

📝 A continuously expanded list of frameworks, libraries and tools I used/want to use for building things on the web. Mostly JavaScript.

DEPRECATED jQuery Responsive Carousel.

⬢ Style props for rapid UI development

Responsive and slick progress bars

The mobile-friendly, responsive, and lightweight jQuery date & time input picker.

:leaves: Touch, responsive, flickable carousels

🔥 Highly performant, light ~1kb and configurable lazy loader in pure JS with no dependencies for responsive images, iframes and more

jQuery lightbox script for displaying images, videos and more. Touch enabled, responsive and fully customizable.

Impressive component library for expressive web development! Build responsive projects on the web with the first front-end component library in Metro Style. And now there are even more opportunities every day!

A customizable, modular, responsive, lightbox gallery plugin.

Beautiful typographic defaults for HTML you don't control.

💬 ‎ Modern, responsive, cross-platform, self-hosted web IRC client

150+ HTML5 Website Templates

Provides HTML UI layout for Angular applications; using Flexbox and a Responsive API

✨ Build a beautiful and simple website in literally minutes. Demo at https://beautifuljekyll.com

noUiSlider is a lightweight, ARIA-accessible JavaScript range slider with multi-touch and keyboard support. It is fully GPU animated: no reflows, so it is fast; even on older devices. It also fits wonderfully in responsive designs and has no dependencies.

A group of plugins for responsive tables.

Full featured JavaScript image & video gallery. No dependencies

A few simple, but solid patterns for responsive HTML email templates and newsletters. Even in Outlook and Gmail.

Generate responsive pages and apps on HTML, Tailwind, Flutter and SwiftUI.

HEML is an open source markup language for building responsive email.

CSS Element-Queries aka Container Queries. High-speed element dimension/media queries in valid css.

✨ Makes text fit perfectly

Create, preview (browser/iOS Simulator), and send custom email templates for Node.js. Made for @forwardemail, @ladjs, @cabinjs, @spamscanner, and @breejs.

Modern responsive template for the Django admin interface with improved functionality. We are proud to announce completely new Jet. Please check out Live Demo

Modern Django Admin

:arrow_right_hook: Ridiculously Responsive Social Sharing Buttons

✩ Automates responsive resizing ✩

The responsive CSS animation framework for creating unique sliders, presentations, banners, and other step-based applications.

OpenUI5 lets you build enterprise-ready web applications, responsive to all devices, running on almost any browser of your choice.

A minimalist blog theme for hugo.

A Grunt workflow for designing and testing responsive HTML email templates with SCSS.

Golang package that generates clean, responsive HTML e-mails for sending transactional mail

Responsive Bootstrap 3 Admin Template based on AdminLTE with vue.js

A minimal, responsive, style-agnostic CSS framework!

Vecty lets you build responsive and dynamic web frontends in Go using WebAssembly, competing with modern web frameworks like React & VueJS.

Sidr is a jQuery plugin for creating side menus and the easiest way for doing your menu responsive.

Beautiful and expressive Sparklines React component

Personal Website & Blog Theme for Hugo

A Flexible, Responsive CSS Framework - Powered by Sass

A collection of best front-end frameworks for faster and easier web development.

✉️ An awesome list of resources to build better emails.

React.js Responsive Carousel (with Swipe)