Prime is a UI framework for Sketch that may come in handy when you need to create a full-fledged Design System at the speed of light.
Freebies tagged: frameworks
Tailwind CSS is a utility-first CSS framework for rapid UI development, a CSS where class names are not based on their content but describe what they do.
Shards is a free design system based on Bootstrap 4 framework which includes responsive components and icons from both Material and Font Awesome.
Shoelace is a basic CSS starter kit that you can customise. through CSS variables and it doesn’t require Less, Sass or any preprocessor.
fractures is a CSS toolkit providing a set of CSS utility classes that may be used for quick prototyping as well as for production.
iotaCSS is a new SASS based framework built by Dimitris Psaropoulos for creating lightweight, performant, readable and fully responsive interfaces.
Carbon Design System is a free set of UI kit released by IBM and available for designers and developers, as Sketch file and HTML + SCSS component library.
Propeller is a responsive CSS framework that combines Google Material Design and Bootstrap components into a new library.
Element is a complete and minimal framework based on Vue.js that includes many useful UI components to quickly build websites and apps.