Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.
Structure Alternatives
Structure is described as 'Declarative, Flexbox based grid framework. Structure defines layout using non-standard attributes on elements. (If you have used frameworks like AngularJS, you have already gotten some exposure to declarative syntax and non-standard attributes' and is a CSS Framework in the development category. There are more than 25 alternatives to Structure for a variety of platforms, including Web-based, Self-Hosted, JavaScript, Vue.js and HTML5 Boilerplate apps. The best Structure alternative is Bootstrap, which is both free and Open Source. Other great apps like Structure are Tailwind CSS, Bulma, Semantic UI and Foundation.
Alternatives list
This project's goal is to be able to create a fully accessible material design styled website using React Components and Sass.
Cost / License
- Free
- Open Source
Platforms
- Self-Hosted

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.



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.

- 53 MUI alternatives
MUI is a lightweight HTML/CSS/JS framework that follows Google's Material Design guidelines.



- 75 Picnic CSS alternatives
Unpack your meal and get coding. An invasive CSS library to get your style started.
Phonon is a front-end framework made with mobile and desktop in mind. It offers clear and neutral components that integrate best practices and ideas coming from well-known design styles.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- iPad
Phonon Framework is the most popular Windows, Android, Mac, iPhone, Linux, iPad & Android Tablet alternative to Structure.
- Phonon Framework is Free and Open Source
The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.
Juiced has many of the same layout features that you know and love, but improves upon them with better mobile targeting, custom column ordering, better alignment options, understandable HTML, and less boilerplate styles.
Cost / License
- Free
- Open Source
Platforms
- Online
- 97 Webments alternatives
Webments is a collection of libre frameworks designed with scratch CSS using different design languages.


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