When it comes to developing enterprise applications and building complex business interfaces (CRM systems, ERP solutions, and dashboards), JavaScript UI libraries are indispensable.
This is not just about buttons and input fields; it’s about powerful widgets: DataGrid, Scheduler, Pivot, Gantt, Spreadsheet, and other components that enable rapid business logic development and high performance when processing big data. These components reduce the time spent writing custom code and ensure a clear, consistent interface structure within the application.
So today we’ll take a look at the most popular JavaScript UI libraries and frameworks for desktop application development, focusing on how well they’re equipped with these “heavy” out-of-the-box components. We’ll also explore free open-source alternatives so you can make the best choice.
Sencha Ext JS
Ext JS is one of the oldest and most feature-rich JavaScript UI frameworks.
It is not just a collection of components, but a full-fledged application framework that includes MVC/MVVM architecture, a layout system, routing, and a data layer. Ext JS was one of the first tools to enable the development of desktop-like web applications in the browser.
GitHub: https://github.com/extjs
npm: 364 weekly downloads https://www.npmjs.com/package/@sencha/ext
🏆 Why It’s Notable:
- One of the most comprehensive UI toolkits (140+ components)
- Strong focus on enterprise-grade data grids and visualizations
- Tools like Themer, Architect, and Inspector to speed up development
- Has a steeper learning curve 📌 Best For: Comprehensive enterprise platforms, in-depth analysis of large datasets.
Bryntum
A commercial collection of advanced components for project planning and management in enterprise desktop applications. It is not a full-fledged UI framework, but rather a collection of specialized components — such as Gantt charts, schedulers, and calendars — for enterprise desktop applications. Its modern architecture and clear specialization have made Bryntum highly popular among developers of enterprise and resource management applications.
GitHub: https://github.com/bryntum
npm: 533 weekly downloads https://www.npmjs.com/package/@bryntum/schedulerpro-trial
🏆 Why It’s Notable:
- Focus on components for project/resource planning — Gantt, Scheduler, and Calendar
- Emphasis on vanilla JS, but wrappers are available for integration with Angular, React, and Vue
- In addition to UI components, they offer development tools for monitoring and testing for JS code errors 📌 Best For: Project and resource planning interfaces, analytical interfaces, PM applications
Webix
Webix is a well-known JavaScript UI library designed for building desktop-style web applications. The library provides a unified UI engine and a system of layout components that can be used to build complex interfaces. Key features include a large number of ready-to-use complex widgets (Gantt, Scheduler, Spreadsheet) in a single package, declarative interface configuration, and concise code with minimal external dependencies.
GitHub: https://github.com/webix-hub
npm: ~1.1k weekly downloads https://www.npmjs.com/package/webix
🏆 Why It’s Notable:
- Over 100 UI components, including Gantt, Pivot, File Manager and Scheduler
- High performance even with large datasets
- Includes a UI Designer for rapid prototyping and the Jet micro-framework, which allows you to build interfaces like a construction kit.
📌 Best For: CRM systems, BI dashboards, internal corporate dashboards, and administrative interfaces.
Kendo UI
Kendo UI is one of the most well-known enterprise UI frameworks. The library offers over 100 user interface components, ranging from charts and navigation elements to “heavy-duty” widgets such as Data Grid, Pivot Grid, Scheduler, Gantt, and others. The library’s main goal is to provide a unified component system for enterprise projects, where the component set is accessible across different front-end ecosystems. It is compatible with Angular, React, and Vue frameworks via adapters.
GitHub: https://github.com/telerik/kendo-ui-core
npm: ~13.3k weekly downloads https://www.npmjs.com/package/kendo-ui-core
🏆 Why It’s Notable:
- A comprehensive set of UI components for Angular, React, and Vue
- A consistent system of themes and templates
- Designed for enterprise projects where ready-made templates are essential 📌 Best For: business-oriented user interfaces, enterprise web services and portals, as well as SPAs.
DHTMLX
DHTMLX is one of the longest-standing players in the enterprise UI components market. Like Bryntum, it focuses not so much on the UI component library (DHTMLX Suite) as on a set of specialized heavy widgets, including Scheduler, Gantt, Diagram, Kanban, and others. Detailed documentation and numerous interactive demos for various scenarios make it easy to get started with the product.
GitHub: https://github.com/DHTMLX
npm: ~3.3k weekly downloadshttps://www.npmjs.com/package/dhtmlx-scheduler
🏆 Why It’s Notable:
- Focus on PM and data-heavy tools (Gantt, Scheduler, Kanban)
- Flexible integration with React/Vue/Angular
- Comprehensive components are sold not only individually but also in bundles for different types of projects 📌 Best For: Project management and planning, analytical interfaces, flexible UI customization.
DevExtreme (DevExpress)
DevExtreme is a UI library from DevExpress, comprising a set of over 80 UI components designed for data-centric applications. Architecturally, the library is built around a data layer and data-driven components. “Heavyweight” widgets, including the feature-rich DataGrid, Scheduler, and others, are widely used in enterprise environments and are suitable for large desktop applications.
GitHub: https://github.com/devexpress/devextreme
npm: ~200.5k weekly downloads https://www.npmjs.com/package/devextreme
🏆 Why It’s Notable:
- Enterprise-oriented components (Grid, Charts, Scheduler, Pivot)
- Seamless integration with popular frameworks
- User-friendly templates and TypeScript support 📌 Best For: Cross-framework projects, dashboard interfaces, analytics dashboards, and BI systems.
Syncfusion Essential JS (EJ2)
Syncfusion EJ2 is one of the largest UI component libraries on the market, offering a wide range of components, including Data Grid, Gantt, Scheduler, Charts, and others. Some of these robust components can replace specialized libraries (for example Spreadsheet or Pivot Grid). In essence, Syncfusion EJ2 is a full-fledged commercial UI platform for developing enterprise desktop applications. In terms of enterprise component coverage, it serves as an alternative to Kendo/Webix.
GitHub: https://github.com/syncfusion/
npm: ~270k weekly downloads https://www.npmjs.com/package/@syncfusion/ej2-base
🏆 Why It’s Notable:
- An extensive set of components and modular UI controls for the JavaScript ecosystem
- Best-in-class visualization and adaptability
- Tools for customization and multilingual support 📌 Best For: BI, dashboards, and data-rich enterprise projects.
Smart UI
Smart UI is a comprehensive toolkit for building interactive business applications, with a focus on performance and component customization, including Data Grid, Pivot Table, Chart, Kanban, and more. The components are designed with sufficient depth to handle both basic and complex scenarios without integrating third-party libraries.
GitHub: https://github.com/htmlelements
npm: ~60k weekly downloads https://www.npmjs.com/package/jqwidgets-framework
🏆 Why It’s Notable:
- Modern and web components-based
- Lightweight and quick to get started
- Affordable for small businesses 📌 Best For: Admin panels, prototyping, UI microservices.
Why Complex Components Matter in Enterprise JS UI Libraries
As we noted before, a single overview of the features of modern JavaScript UI libraries is not enough to choose the best tool. For companies that develop multiple business-oriented applications and dashboards, an important selection factor is the richness of the feature set. The best option is the libraries that provide built-in support for complex components “out of the box,” and sell each individual component through a modular system.
The visualization below shows which “heavy” UI components — such as grids, Gantt charts, schedulers, pivot tables, and spreadsheets — are available in the libraries listed above. This table will help you compare the range of supported UI components and select the right solution for your enterprise-level project.
Libraries offering a rich set of heavy widgets in a single package reduce TCO and the risk of errors. This is critical for BI, ERP/CRM, dashboards, and PM tools.
What About Free JavaScript UI Libraries?
There are several free, open-source JavaScript libraries that provide user interface components. However, most of them focus on individual elements (such as data tables or charts) rather than offering a complete set of widgets ready for use in an enterprise environment.
JS Libraries for Charting and Data Visualization
There are multifunctional libraries for building charts with interactive and scientific visualization, such as
- Chart.js
- D3.js
- Plotly.js
They are widely used to create various types of charts, complex custom visualizations, and dashboards. However, the role of such libraries is limited to data visualization, presenting data as graphs, and analytics. For a complete user interface layout, broader components are needed, such as grids, schedulers, or layout systems.
JS Libraries with Standalone, Comprehensive UI Components
Among open-source solutions, there are a number of popular libraries that offer fairly powerful and well-designed components, but typically within the scope of a single specific task rather than as part of a unified UI system, for example:
Tabulator. A well-known library for working with tables. It supports sorting, filtering, editing, pagination, and handling large volumes of data.
Frappe Gantt
A library for visualizing tasks in Gantt chart format, which is in high demand in project management applications. It has good basic capabilities and is easy to use, but is limited to task management scenarios.
FullCalendar
A popular alternative to commercial components like Calendar or Scheduler, this is a library for building schedules with support for events and various views. It handles calendar management well and supports drag-and-drop, but remains an isolated user interface component.
jQuery UI
Arguably the most well-known and widely used JavaScript library of the past, it provides all the necessary basic user interface components, from buttons and input fields to interactive drag-and-drop elements, dropdown forms, and more. Although it remains relevant in legacy projects, it does not provide a modern component-oriented architecture or complex user interface widgets “out of the box.”
Final Thoughts: How to Choose the Best JavaScript UI Library
If you’re looking for a full-featured framework that offers a comprehensive architecture and a wide range of components “all in one package,” and you’re willing to invest in it, the best choices would be the Sencha Ext JS or Syncfusion EJ2.
If your priority is a rich set of comprehensive “out-of-the-box” UI widgets for enterprise use and team support for integration into existing stacks, your choice is DevExtreme, Kendo UI, Smart UI, or Webix.
For niche analytical or project management tasks, consider the powerful, standalone components from the Bryntum and DHTMLX.
Free JavaScript UI libraries are an alternative if you need a single specific complex component: for data visualization, creating a table, or a Gantt chart, for example. However, developing full-fledged enterprise applications typically requires a combination of several such solutions, which increases the complexity of integration and UI support.
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