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Ext JS is a JavaScript framework with 140+ pre-integrated components, a shared data package and an application architecture in one product.
Syncfusion offers a UI component library for JavaScript, Angular, React, Vue, Blazor and .NET applications.
Pick a capability to see a visual explanation, what Ext JS provides, and what Syncfusion offers.
Ext JS gives you UI components, data handling and application structure in one framework. React teams can bring Ext JS components into their apps with ReExt, included with Pro and Enterprise.
Learn about ReExtSyncfusion offers component suites for JavaScript, Angular, React, Vue, Blazor and ASP.NET.
One Ext JS app across desktop, tablet and mobile browsers
Build for desktop, tablet and mobile browsers with the Modern toolkit. The Classic toolkit is also available in Pro and Enterprise.
Explore Ext JSSyncfusion offers web component suites plus .NET desktop and mobile suites.
Grouped, locking, editable and infinite grids are included in every edition. Ext JS 8.0 adds horizontal buffering, so grids with 1,000+ columns render efficiently alongside locking, grouping, filtering and editing.
Try the grid performance analyzerSyncfusion offers a DataGrid with filtering, grouping, editing and row and column virtualization.
| Q1 | Q2 | Q3 | Q4 | |
|---|---|---|---|---|
| Americas | 55k | 60k | 58k | 64k |
| EMEA | 42k | 45k | 48k | 51k |
| APAC | 33k | 37k | 39k | 41k |
| Total | 130k | 142k | 145k | 156k |
Ext JS Enterprise includes the Pivot Grid, with outline, compact and tabular layouts, and the Exporter for exporting grid data.
See pivot examples in the KitchenSinkSyncfusion offers a Pivot Table component and Excel, CSV and PDF export in its DataGrid.
Forms, trees, charts and layouts work together out of the box, with Calendar in Enterprise and the new signature pad and QR code reader and generator in Ext JS 8.0.
Browse every componentSyncfusion offers charts, scheduler, Gantt, diagram and rich text editor components, plus separate document SDKs.
Models, stores and proxies are shared by every component, with MVC and MVVM built in. Update a record once, and the grids, forms and charts bound to it stay in sync.
Read the docsSyncfusion offers DataManager for binding components to local and remote data, working with your framework's architecture.
Design in Architect or low-code in Rapid Ext JS, a VS Code extension with drag-and-drop and real-time preview. Style with Themer, code with IDE plugins, test with Sencha Test and upgrade with Upgrade Adviser.
See the Ext JS toolsSyncfusion offers Theme Studio, an MCP server coding assistant and Code Studio.
An AI coding companion trained on Sencha Ext JS, its documentation and community best practices. Ask how to configure components, debug layouts or find the right config, right from the Sencha docs.
Try Ask Sencha AISyncfusion offers AI components, such as AI AssistView, and AI developer tools.
The main points in one table, based on each vendor's published information.
| Capability | Ext JS | Syncfusion offers |
|---|---|---|
| What it is | JavaScript framework with 140+ pre-integrated components | UI component library (Essential JS 2) |
| Frameworks | Standalone JavaScript; React through ReExt | JavaScript, Angular, React, Vue, Blazor and ASP.NET |
| Platforms | Desktop, tablet and mobile browsers | Web, plus .NET desktop and mobile suites |
| Data grid | Grouped, locking, editable and infinite grids in every edition | DataGrid with filtering, grouping, editing and virtualization |
| Pivot and export | Pivot Grid and Exporter Enterprise | Pivot Table; Excel, CSV and PDF export |
| Other components | Forms, trees, charts, calendar, signature pad and QR code | Charts, scheduler, Gantt, diagram and rich text editor |
| Architecture and data | MVC/MVVM and a shared data package | DataManager data binding with your framework's architecture |
| Developer tools | Architect, Rapid Ext JS, Themer, IDE plugins, Sencha Test and Upgrade Adviser | Theme Studio, MCP server coding assistant and Code Studio |
| AI assistance | Ask Sencha AI coding companion | AI components and AI developer tools |
| Licence model | Per developer per year, by edition | Per developer per year, by product or suite |
| Free options | Community Edition; 30-day trial | Community License; 30-day evaluation |
Both are commercially supported. The right choice depends on how you want to build your application.
Each card shows one difference as a picture, with the short version underneath.
In short: Ext JS brings components, data and app structure together in one framework. Syncfusion offers components and data binding that work with the framework you choose.
In short: Ext JS is its own framework and works inside React through ReExt. Syncfusion offers suites for many web and .NET platforms.
In short: Ext JS includes its core grids in every edition. Syncfusion offers its DataGrid in the Grid SDK and in the UI Component Suite.
One edition covers the whole framework
Each product SDK, or the suite
In short: Both are licensed per developer per year with a free community licence and a 30-day trial. Ext JS is offered by edition; Syncfusion by product or as a suite.
More than 10,000 enterprise customers rely on Sencha, including 60% of the Fortune 100.
Ext JS is a JavaScript framework that includes 140+ pre-integrated UI components, a shared data package and an MVC/MVVM application architecture. Syncfusion offers a UI component library used inside JavaScript, Angular, React, Vue, Blazor and .NET applications.
Syncfusion's JavaScript UI controls, also called Essential JS 2, are a component library. They are used within plain JavaScript or a framework such as Angular, React, Vue or Blazor.
Yes, for teams building data-intensive web applications who want components, a data layer, an application architecture and development tools from one framework. Teams building with Angular, Vue, Blazor or .NET can also look at component libraries such as Syncfusion.
Yes. Ext JS includes the Pivot Grid and the Exporter in the Enterprise edition. Syncfusion offers a Pivot Table component, and its DataGrid exports to Excel, CSV and PDF.
Yes. Ask Sencha AI is an AI coding companion trained on Sencha Ext JS, its documentation and community best practices. Developers can use it to configure components, debug layouts and find the right config.
Both offer a free community licence with eligibility rules and a 30-day trial. Ext JS Community Edition is for eligible individuals, and Syncfusion's Community License is for eligible small organizations. Check each vendor's site for current rules.
Explore every Ext JS Enterprise component and tool free for 30 days.
Ask Sencha AI
