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:
Yourkube Alternatives
Yourkube is described as 'Build web prototypes and applications 10x faster' and is a CSS Framework in the development category. There are more than 50 alternatives to Yourkube, not only websites but also apps for a variety of platforms, including Self-Hosted, JavaScript, Mac and Windows apps. The best Yourkube alternative is Bootstrap, which is both free and Open Source. Other great sites and apps similar to Yourkube are Tailwind CSS, Bulma, Semantic UI and Foundation.
Alternatives list
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
CSS-in-JS with build time generated styles, RSC compatible, multi-variant support, and best-in-class developer experience.

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

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.



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



































