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:
Lite CSS Alternatives
Lite CSS is described as 'Simple but also unique web framework. The term 'Lite' expresses the simplicity but also how light the project is!' and is a CSS Framework in the development category. There are more than 50 alternatives to Lite CSS, not only websites but also apps for a variety of platforms, including Self-Hosted, Mac, Windows and Linux apps. The best Lite CSS alternative is Bootstrap, which is both free and Open Source. Other great sites and apps similar to Lite CSS are Tailwind CSS, Bulma, Semantic UI and Foundation.
Alternatives list
- 83 Skeleton alternatives
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
United States


Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools.
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.
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
United States

Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
- 52 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.
France
EU

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
- 93 Little Widgets alternatives
Little Widgets is a collection of beautifully designed HTML website widgets and popups. It’s coded, responsive, animated and ready to use on your website.



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.
Cost / License
- Paid
- Proprietary
Platforms
- Online








































