Wee

Wee is a front-end framework for developing responsive websites using a mobile-first CSS bootstrap paired with a powerful JavaScript library

Angular Material

Angular Material is both a UI Component framework and a reference implementation of Google’s Material Design Specification.

Element, a Vue 2.0 based component library for developers, designers and product managers.

Cross-platform Material component library for React

Metro UI CSS a set of styles to create a site with an interface similar to Windows 8.

UI controls for great web & mobile developers. Use it for progressive web and hybrid apps with plain JS, jQuery, Angular, React and KO.

Select2 offers customizable select box with support for searching, tagging, infinite scrolling, and many other used options.

Swagger UI is a dependency-free collection of HTML, Javascript, and CSS assets that dynamically generate beautiful documentation from a Swag