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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
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Bootstrap
Simple and flexible HTML, CSS, and JS for popular UI components and interactions
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Dojo Toolkit
Dojo Toolkit
Element
Desktop UI library based on Vue 2.0
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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.
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SmartClient
Isomorphic software provides SmartClient, the most advanced, complete HTML5 technology for building high-productivity web applications for all platforms and devices.
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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.