React with pre-made components
React can also act as a “widget toolkit” by using pre-made React components. http://react-components.com/
13 Alternatives To React with pre-made components
Bootstrap
Simple and flexible HTML, CSS, and JS for popular UI components and interactions
Dojo Toolkit
Dojo Toolkit
Element
Desktop UI library based on Vue 2.0
Essential JS
60+ stunning, feature-rich JavaScript UI controls
Inferno
An extremely fast React-like javascript library for building modern user interfaces.
Polymer
Polymer is a library that uses the latest web technologies to let you create custom HTML elements.
Quasar Framework
SPA front-end on steroids.
SmartClient
Isomorphic software provides SmartClient, the most advanced, complete HTML5 technology for building high-productivity web applications for all platforms and devices.
Vue
Create vast expanses of terrains, add trees, select the best point of view and render…
ZingGrid
Built using web components, ZingGrid is a fully-featured, native solution for interactive, mobile-friendly JavaScript data grids and tables.
Zino UI
WAI-ARIA compatible user interface library built on top of jQuery, it consists of 25+ UI components.
jqGrid
Updated information on jqGrid.Can be used for free for personal, school or non-profit project, under the Creative Commons Attribution-Non-Commercial 3.0 License.