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:
Material Design for Bootstrap Alternatives
Material Design for Bootstrap is described as 'Free framework with 400+ UI elements, 600+ icons, CSS animations, SASS files, responsive layouts, various templates, tutorials, and support for multiple JS frameworks' and is a CSS Framework in the development category. There are more than 50 alternatives to Material Design for Bootstrap for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best Material Design for Bootstrap alternative is Bootstrap, which is both free and Open Source. Other great apps like Material Design for Bootstrap are Tailwind CSS, Bulma, Semantic UI and Foundation.
Alternatives list
Bacuri is a minimalist framework that uses Material Design concepts, and has a plugin system to enhance its capabilities.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- npm
- Node.JS
- JavaScript
- Typescript
Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools.
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 themeable design.
Cost / License
- Free
- Open Source
Alerts
- Discontinued
Platforms
- Online
- jQuery


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 developer community.
Stylify is a library that generates utility-first CSS dynamically based on what you write. Write HTML. Get CSS 🚀.


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Eva Design System is a free and open-source, customizable design system. Available for Sketch with Mobile and Web component libraries.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Self-Hosted
- Sketch

Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
- 51 Metro UI CSS alternatives
Metro UI CSS a set of styles to create a site with an interface similar to Windows 8.
Cost / License
- Free
- Open Source
Platforms
- Online
- LESS
- jQuery
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.

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!
Cost / License
- Free
- Open Source
Platforms
- Self-Hosted





































