Best Ext JS UI Components for Modern UIs in 2025

In 2025, you are not just looking for the basic tools for building modern web apps. In fact, you need something reliable, flexible, and fast. That’s where having a strong JavaScript front end framework with built-in UI components really helps.

Ext JS is one of the best choices for most developers. It’s not just another name you’ll find in the list of famous JavaScript frameworks. Ext JS is made for real, demanding projects. It is used where performance matters and things need to stay flexible. It has tools to manage large data without slowing down or crashing.

This framework comes with a full set of JavaScript UI components that you can actually count on. It also works nicely with other tools like React and Angular. So if you’re after a solid React UI component library alternative that’s complete and dependable, Ext JS is a great option.

In this blog, we’ll break down why it’s still a go-to for enterprise apps. We’ll also talk about how it compares with React components. What makes a good UI component library, and how developer tools shape the experience.

So, whether you’re exploring React server components or checking out the best UI library for React, this will give you a clear view. Let’s get started.

Built for Developers with the Right Tools

The ecosystem really matters when picking a JavaScript web app framework. It’s more than just the code you write. It affects how easily you build, test, and manage your app. A good setup can save you a lot of time. That’s where Ext JS shines.

Some React UI libraries give you just the basics. Ext JS is different. It comes with everything you need right away. No need to mix and match tools. You can just open it up and start building right away.

Take Sencha Architect as an example. You can build your UI by just dragging and dropping. No need to write all that extra setup code. It lets you stay focused on how your app works instead of worrying about the layout.

Then you’ve got Sencha Themer. It helps you adjust fonts, layouts, and themes without messing around with CSS too much. If you just want your app to look clean without spending forever on styling, it really helps. It’s simple and does the job.

Sencha Cmd helps you handle builds and manage your project setup easily. Sencha Test lets you run automated tests, which helps catch bugs early. When you use them together, it gets a lot simpler to build apps that are big and need to grow over time.

Now, if you’re into React, there’s good news. With ExtReact, you can use powerful Ext JS UI components inside your React apps. It’s like getting the best React UI component library experience but with a more complete setup. This hybrid approach lets you enjoy both robust tools and the flexibility of React server components.

If you’re working with React JS components or using other top JavaScript frameworks, Ext JS is worth knowing. It’s easy to use, well-supported, and blends nicely with today’s JavaScript front end tools. Looking for a strong UI library for React-style apps? This one’s a solid option.

Also Read: 10 Best React UI Component Libraries in 2025

Enterprise-Grade Features for Large-Scale Applications

Creating advanced apps for today’s businesses can be tough. You need tools that are strong, quick, and easy to work with. Ext JS helps with that. It’s more than a regular set of JavaScript UI components. It gives you everything you need to build a full, large app.

Ext JS includes an enterprise-grade React JS UI component library that can sort, filter, group, and paginate huge data sets with zero lag. It also comes with built-in charts and graphs to help you visualize data easily. Need interactive reports? The Pivot Grid and real-time dashboards have you covered.

This isn’t your average UI component library. It feels more like a robust system built for serious work. With two-way data binding, your React UI components stay in sync with your data as it changes. That’s the kind of thing that makes development smoother and apps feel alive.

It smoothly works on all devices. Whether you’re on desktop, tablet, or phone, everything runs smoothly. That’s what you’d expect from one of the best React UI libraries available.

If you’re building anything like a financial tool or a live data dashboard, Ext JS delivers on performance, flexibility, and scale. It’s a solid pick among the most popular JavaScript frameworks out there.

Best-in-Class UI Components

One reason developers really like Ext JS is that it comes with a lot of built-in UI components. You’ll find ready-to-use grids that let you sort, filter, and edit easily. It also includes forms, charts, menus, toolbars, and date pickers. So, it gives you just about everything you’d want in a good UI component library.

Instead of stitching together multiple third-party tools, Ext JS gives you a complete package. It has ready-to-use UI components that really work smoothly. You can easily tweak each one to match your app’s style and how it works. It’s like using your own set of React components, just without all the setup. Simple and convenient.

You can easily make changes with Sencha Themer. Just pick your layout, adjust the colors, and set the spacing as you like. It lets you control how things work without digging into the code. This helps keep your design the same throughout your app.

In 2025, developers look for tools that are fast and easy to use. Ext JS checks that box. It works like the best React UI library and runs well on a solid JavaScript web app framework. It’s great for teams who want both ease and full control.

Cross-Platform Compatibility

Now, apps need to be on all devices. Whatever the device, laptop, phone, or iPad, users expect the same smooth experience. That’s where Ext JS really helps. It handles cross-device compatibility out of the box.

You don’t have to set up anything special. It’s built-in responsive layouts just work. No extra media queries or pulling in Bootstrap. It’s all handled for you, which saves a lot of time during development.

Ext JS works well when building Progressive Web Apps. Want your app to load fast or work offline? It can do that. Need push notifications? That’s covered too. And with Sencha Cmd and Cordova, you can build mobile versions easily, just like you would using other JavaScript front end frameworks.

It works well with today’s tech stacks using React UI components or other JavaScript UI tools. It’s quick, easy to use, and ready for real projects.

Performance and Scalability

Honestly, if you’re building an app that’s gonna grow, speed isn’t optional. It has to be fast. Ext JS gets this right with features that just make things feel smooth.

Virtual scrolling? Super useful when you’re working with long tables. It doesn’t try to load everything at once, which keeps things quick. Lazy loading is there too, so stuff only pops in when you actually need it. Saves time and keeps things lighter.

And for pulling in data, it does that asynchronously. No annoying delays. Everything’s modular, too, which makes updates and scaling a whole lot easier. These features make Ext JS perform just as well as many of the most popular JavaScript front end frameworks out there.

While React Server Components are getting attention now, Ext JS has been handling server-side rendering and smart resource control for a long time. It’s a strong alternative to any modern React component library or UI component library focused on large-scale needs.

Continuous Updates and Future Readiness

One of the great things about Ext JS is how well it keeps up with the times. The Sencha team doesn’t just build and leave it – they constantly push updates to make it better. These updates help with:

• Faster performance
• New and improved React UI components
• Better support for modern browsers and devices
• Regular security patches

This means you can stick with your existing code while staying current. You won’t need a full rewrite like you might with some JavaScript front end frameworks. It’s built to grow with you.

If you’re using a React UI component library, that kind of stability and long-term support matters a lot, especially in a space full of fast-changing JavaScript UI components.

Integration with React, Angular, and More

Today’s apps often mix tools from different stacks. Luckily, Ext JS plays well with a lot of them. It works with:

• React (using ExtReact)
• Angular (via ExtAngular)
• Vue.js
• Backends like Node.js, .NET, Java, and Python using REST, GraphQL, or WebSocket

So if you’re building with a React UI component library or adding new features to an older app, Ext JS fits right in. It lets you drop in powerful UI blocks just like React UI components.

Not sure what a UI component is? Think of it as a building block for your app’s interface. And yes, you can pass Ext JS components around in React, just like any regular React component. Simple and scalable.

Developer Community and Professional Support

No JavaScript web app framework really thrives without a solid developer community behind it. With Ext JS, you’re not on your own. The community is active, helpful, and filled with folks who’ve been using it for years. You’ll find support in places like:

• Sencha Forums
• Stack Overflow
• GitHub Repositories
• Official Sencha Support

The docs are pretty beginner-friendly too. You won’t spend hours trying to figure out how to use basic react ui components or wondering if you need to import React in every file. Unlike some javascript ui component setups, this one’s less of a hassle.

Whether you’re using Ext JS with React components or exploring other ui component libraries, the support makes a difference. It’s great for solo developers and teams alike. You can build fast using plugins from the React component library, without starting from scratch.

Real-World Use Cases

Ext JS really shines when you’re building complex, data-heavy apps. Here are a few real examples where it works well:

Financial Applications

With features like Pivot Grids, live charts, and real-time updates, it’s great for creating financial dashboards that need to stay current.

Business Reporting Tools

Easily manage huge datasets using dynamic filters and cross-tab views. It’s efficient and responsive.

Healthcare Dashboards

You can build secure, HIPAA-compliant apps with clean layouts and protected data pipelines.

eCommerce Admin Panels

Handle everything from product listings to customer orders with flexible UI components.
Whether you’re using Ext JS alone or combining it with a React UI component library, it helps streamline UI-heavy tasks. It plays nicely alongside popular JavaScript UI components and fits well within the broader JavaScript web app framework landscape. Perfect for both startups and larger enterprises aiming for powerful dashboards.

Final Thoughts

Ext JS is still going strong in 2025, especially if you’re working on enterprise-level apps. It’s not just another tool in your kit – it’s a full package that covers everything from layout to performance.

With built-in support for React UI components and solid integration with popular UI component libraries, it gives devs a lot to work with. You get reliable cross-platform performance and access to one of the best UI libraries out there. Plus, if you’re already using React JS components, it blends in smoothly.

For teams that want fast builds and a clean structure, Ext JS ticks all the boxes. It supports modern JavaScript UI components, works well with React server components, and fits right into today’s JavaScript front end frameworks.

So if you’re aiming to build something solid and scalable, Ext JS is a smart pick. It’s flexible, fast, and made for serious development.

FAQs

What is a React component?

A React component is a small, reusable block of UI. Think buttons, forms, or lists. It’s written in JavaScript using JSX and helps build clean, modular React UI components.

What is a component in React?

In React, a component is like a building block. It controls its own look and logic. You can combine multiple components to create full interfaces using any React UI component library.

Can you pass a component as a prop in React?

Yep, you can pass a component as a prop. This is common in React components. It works great for flexible layouts or dynamic UI setups, even with ExtReact.

Do I need to import React in every component?

Not always. If you’re using React 17 or newer, JSX handles most of it. For Ext JS-based react ui libraries, setup is handled behind the scenes, so fewer imports are needed.

What is a JavaScript framework?

A JavaScript framework is a set of tools and libraries that help build modern apps. React, Angular, and Ext JS are some of the most popular JavaScript front end frameworks today.

What component framework is good for React?

There are lots of solid choices. Material UI, Chakra UI, and ExtReact are great examples of popular React component libraries used for building smooth, scalable UIs in React apps.

How to make your own React component?

Just write a function or class that returns JSX. Add props or state if needed. That’s how you create simple, reusable React components for any javascript ui components project.

Want to start now? Sign up for Ext JS.