React UI Component Library Comparison: ReExt vs Syncfusion vs KendoReact vs MUI

Choosing a React UI component library for an enterprise app usually comes down to a short list. Four names come up again and again: ReExt, which brings the Ext JS framework into React; Syncfusion, with its broad Essential Studio suite; KendoReact from Progress Telerik; and MUI, the most widely used Material Design library, with its MUI X extensions.

All four are capable, actively maintained and used in production by large organizations. They differ in philosophy, in where their strongest features live, and in how they’re licensed. This comparison looks at each library’s approach, its data grid and the components around it, developer experience, licensing and cost, and finishes with a scenario guide for choosing.

Details reflect each vendor’s public information as of October 2026. Vendors change features, tiers and prices regularly, so confirm on their sites before deciding.

At a glance

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The four libraries

ReExt

Approach. ReExt brings Ext JS, a mature component framework for data-heavy web apps, into React. Each Ext JS component is used as a <ReExt> element, picked with an xtype and configured through a config prop, with events delivered to React as props such as onEdit.

Strengths. Depth in data components: the Ext JS grid, pivot grid, trees, charts, forms and application layouts, all sharing one theme and one data layer. Teams with existing Ext JS apps can reuse their components, stores and custom classes in React.

Watch-outs. There’s no free production tier. The current release supports the Ext JS classic toolkit and theme. Configuration follows Ext JS conventions rather than typical React component props, which Ext JS developers know well and React developers need to learn.

Best for. Data-heavy enterprise apps such as back-office systems, dashboards and trading screens, and Ext JS teams moving to React.

Syncfusion

Approach. A large suite of React components, published as individual npm packages, under one Essential Studio license that also covers other frameworks.

Strengths. The broadest catalog in this comparison, at more than 145 React components, including data grid, pivot table, tree grid, scheduler, charts and document-related components. One license unlocks all grid features.

Watch-outs. With so many components, consistency and depth vary by component, so test the ones you depend on. Pricing is per developer, sold with a minimum team size.

Best for. Teams that want one vendor for a very wide range of components, and small organizations that qualify for the free Community License.

KendoReact

Approach. React components from Progress Telerik, with a free tier and a commercial tier, plus design tools and themes shared with other Telerik products.

Strengths. More than 120 ui components in the commercial edition, a polished data grid, and mature themes. KendoReact Free gives access to more than 50 components at no cost.

Watch-outs. Many grid features that enterprise apps need, such as grouping, Excel export and virtualization, are in the premium tier.

Best for. Teams already standardizing on Telerik tools across frameworks, or those who want to start free and upgrade.

MUI

Approach. Material UI, the open-source core, implements Google’s Material Design. MUI X adds advanced components, including the data grid, date and time pickers, charts and tree view, with free community versions and commercial Pro and Premium tiers.

Strengths. The largest community of the four, excellent design-system tooling, and a free core that suits a wide range of apps.

Watch-outs. Row grouping, aggregation, Excel export and pivoting are in Premium, two tiers above the free grid. MUI X pricing and licensing changed in April 2026, including a move to application-based licensing.

Best for. Apps built on Material Design, and design-led products where the grid needs are moderate.

Head to head: the data grid

In enterprise apps, the data grid usually decides the choice. The table shows which tier includes each feature. Free means a free or community edition; Licensed means Syncfusion’s single license (commercial, or Community for eligible organizations); a tier name means you need that tier.

ReExt has no free tier, so “Pro” means its entry-level paid plan. For a deeper grid-only comparison, including AG Grid and TanStack Table, see Enterprise React Data Grid: The Features Enterprise Teams Need, and What Each Grid Includes.

Beyond the grid

Data-heavy screens also need charts, forms, dates, trees and layouts. How each library covers them:

The last row matters most for data-heavy apps. With ReExt, a grid and a chart can read the same store, so editing a value in one updates the other without extra state code.

Developer experience, theming and data handling

How you write components

Syncfusion, KendoReact and MUI follow typical React patterns: you import a component per feature and configure it with props, often with child components for columns. ReExt uses one component for everything, configured with an Ext JS config object:

    import ReExt from '@sencha/reext';

    <ReExt
      xtype="grid"
      style={{ height: 400 }}
      config={{
        store: { data: orders, groupField: 'region' },
        features: [{ ftype: 'groupingsummary' }],
        columns: [
          { text: 'Customer', dataIndex: 'customer', flex: 1 },
          { text: 'Amount', dataIndex: 'amount', xtype: 'numbercolumn', summaryType: 'sum' },
        ],
      }}
      onSelect={(grid, records) => openOrder(records[0])}
    />

The trade-off: the ReExt style is very compact for complex components and maps directly to years of Ext JS documentation and examples, while the JSX-per-component style feels more familiar to React developers new to Ext JS.

Comparison

Licensing and cost

All four are licensed per developer in some form, but what a license covers, and which tier you need, differs a lot.

How to compare cost fairly

Price the tier that covers every feature on your must-have list, for every developer who needs a license, over three years. Then add the engineering time to build or integrate anything that tier doesn’t include.

For example, with ReExt’s published prices, a team of 10 developers pays $15,000 a year on Pro, or $18,960 a year on Enterprise if it needs pivoting and Excel export. Both cover the full component library, so there’s nothing else to buy for grids, charts, forms or layouts. Run the same calculation with each vendor’s current quote, and watch for features your app needs that sit in a higher tier.

Which React UI component library should you choose?

There’s no single winner. Each library is the best choice for a different kind of team.

Where ReExt is strongest, and where it isn’t

ReExt stands out when the hardest part of your app is its data: many grids with grouping, editing and locked columns, charts and forms working on the same records, complex layouts, and years of maintenance ahead. It’s the only option of the four that lets Ext JS teams bring their existing code into React.

It’s not the best fit if you need a free production license, if your brand demands a heavily customized visual design, or if your app is mostly content with only light data needs. In those cases, MUI or KendoReact’s free tiers are worth a closer look.

Frequently asked questions

What is the best React UI component library for enterprise apps?

It depends on the app. For data-heavy enterprise apps, ReExt offers the deepest integrated data components; Syncfusion offers the widest catalog; KendoReact fits teams on Telerik tools; and MUI suits Material Design and design-led apps.

Is ReExt a good Syncfusion alternative?

For data-heavy apps, yes. ReExt focuses on depth in grids, pivot grids, trees, charts, forms and layouts that share one data layer, and it’s the natural choice for teams with existing Ext JS code. Syncfusion offers a broader catalog, including components outside data apps.

Is there a free version of these libraries?

MUI’s core and MUI X community components are open source, KendoReact Free includes more than 50 components, and Syncfusion offers a free Community License to eligible small organizations. ReExt offers a 30-day trial but no free production tier.

Which library has the best React data grid?

All four have capable grids, but feature tiers differ. Syncfusion includes all grid features under one license. ReExt includes grouping, editing, locking, tree data and server-side data in its Pro plan, with pivoting and export in Enterprise. KendoReact and MUI keep features such as grouping and Excel export in their premium tiers.

Can I use ReExt alongside MUI or another library?

Yes. ReExt components are React components, so teams often use them for data-heavy screens while keeping another library for simpler screens in the same app.

The right library for your data

ReExt, Syncfusion, KendoReact and MUI are all strong React component libraries. The best choice depends on where your app’s complexity lives, which features you need in which tier, and what you already have.

If your app is built around data, with grids, charts and forms on the same screens and years of maintenance ahead, or if you’re bringing an Ext JS app into React, ReExt gives you Ext JS’s 140+ components and shared data stores inside React, under one license.

Next steps: start a 30-day ReExt trial or read React Component Library for Data-Heavy Apps: Why One Vendor Beats Five.