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

Create beautiful, responsive & accessible web apps quickly with Vue or Nuxt. Nuxt UI is an open-source UI library of 100+ customizable components built with Tailwind CSS and Reka UI.
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Self-Hosted
- Nuxt.js
- Vue.js
- Tailwind CSS
- Figma


+4
- 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.

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


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


+3
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.


+5
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

Cost / License
- Free
- Open Source
Platforms
- Online
- LESS
- jQuery




































