
Web-based Ext JS Alternatives
There are many alternatives to Ext JS as a web app if you are looking for a replacement. The best Online alternative is React, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Ext JS and many of them are available as a web app so hopefully you can find a suitable replacement. Other interesting Online alternatives to Ext JS are SmartClient, DHTMLX, RiotJS and jQuery UI.
Alternatives list

A web application framework for building high-performance, data-driven enterprise applications with rich UI components and built-in data management.
Cost / License
- Paid
- Proprietary (LGPL-2.1)
Platforms
- Online


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DHTMLX is a set of JavaScript UI components for speeding up web app development. It offers ready-made widgets for project management apps, ERP and CRM systems, healthcare, educational, and financial software solutions. DHTMLX supports React, Angular, and Vue.


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Riot lets you build user interfaces with custom tags using simple and enjoyable syntax. It uses a virtual DOM similar to React but faster. Riot is very tiny compared to industry standards. We think there is a clear need for another UI library.
jQuery UI is an open source library of interface components — interactions, full-featured widgets, and animation effects — based on the stellar jQuery javascript library . Each component is built according to jQuery's event-driven architecture (find something, manipulate...
Cost / License
- Free
- Open Source
Platforms
- Online


Zepto is a minimalist JavaScript library for modern browsers with a largely jQuery-compatible API.
Cost / License
- Free
- Open Source
Platforms
- Online
Zepto.js vs Ext JS Comments


- Zepto.js is Free and Open Source
- Zepto.js is Lightweight
Dojo Toolkit is an open source modular JavaScript library (or more specifically JavaScript toolkit) designed to ease the rapid development of cross-platform, JavaScript/Ajax-based applications and web sites.
Cost / License
- Free
- Open Source
Platforms
- Online
Prototype is a JavaScript Framework that aims to ease development of dynamic web applications. Prototype provides various functions for developing JavaScript applications. The features range from programming shortcuts to major functions for dealing with XMLHttpRequest.
Cost / License
- Free
- Open Source
Platforms
- Online
- 33 Kendo UI alternatives
Kendo UI is JQuery-based framework for rich UI, build HTML5 apps that look native on any device, build desktop and mobile applications for any browser.
Cost / License
- Freemium
- Proprietary
Platforms
- Mac
- Windows
- Linux
- Online

Mithril is a modern client-side Javascript framework for building Single Page Applications. It's small (< 8kb gzip), fast and provides routing and XHR utilities out of the box.
A toolchain for building reusable, scalable Design Systems. Generate small, blazing fast, and 100% standards based Web Components that run in every browser.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- Linux
- Online
- Self-Hosted
- JavaScript
Gem.js gives you a way to create modular, composable web components and modular, composable styles in pure-javascript. It also includes a set of extensible web components for building visual user interfaces and styling web applications.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
- Online
































Zepto doesn't provide a UI toolkit.