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:
GroundworkCSS Alternatives
GroundworkCSS is described as '100% free and open source responsive HTML5, CSS and JavaScript Framework' and is a CSS Framework in the development category. There are more than 50 alternatives to GroundworkCSS for a variety of platforms, including Web-based, Self-Hosted, Mac, Windows and Linux apps. The best GroundworkCSS alternative is Bootstrap, which is both free and Open Source. Other great apps like GroundworkCSS are Tailwind CSS, Semantic UI, Foundation and UIkit.
Alternatives list
CSS-in-JS with build time generated styles, RSC compatible, multi-variant support, and best-in-class developer experience.

jQuery UI is an open source library of interface components — interactions, full-featured widgets, and animation effects — based on the stellar jQuery javascript library . Each component is built according to jQuery's event-driven architecture (find something, manipulate...
Cost / License
- Free
- Open Source
Platforms
- Online


- 63 shadcn-ui alternatives
A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open source. Open code.

Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools.
Stylify is a library that generates utility-first CSS dynamically based on what you write. Write HTML. Get CSS 🚀.


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EFY allows you to customize the design of your html based apps or websites from an UI sidebar menu and combine billions of possible patterns. You can also create, share or import json themes for easier access. All apps that use efy can share the same theme or individual themes.


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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

- 89 Spectre.css alternatives
Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
Cost / License
- Free
- Open Source
Platforms
- Online
- LESS
- jQuery
w2ui is the most popular Windows, Mac & Linux alternative to GroundworkCSS.
- w2ui is Free and Open Source































