Ext JS
JavaScript web frameworks
Web frameworks
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$1,295 per year per developer
Free TrialFree version
Small
Medium
Large
- Information technology and software
- Banking and insurance
- Energy and utilities
What is Ext JS
Ext JS is a JavaScript framework for building data-intensive web applications with a large set of UI components such as grids, forms, trees, charts, and layout containers. It targets teams building internal business applications and dashboards that require consistent UI patterns and complex client-side interactions. The framework includes its own component model, theming system, and tooling for application structure and builds, and it is typically licensed commercially for production use.
Comprehensive UI component suite
Ext JS includes a broad library of enterprise-oriented UI widgets, including advanced data grids, trees, forms, and charting components. This reduces the need to assemble multiple third-party UI libraries for common business application patterns. The components are designed to work together under a consistent API and layout system, which can simplify large application development.
Strong data grid capabilities
The framework provides feature-rich grid components with capabilities commonly needed in line-of-business apps, such as sorting, filtering, grouping, editing, and virtualization options. It also includes data stores and models that integrate with UI components for binding and state management. This focus can reduce custom engineering effort compared with using standalone charting or grid-only libraries.
Integrated theming and tooling
Ext JS offers a theming approach and build tooling intended to support consistent styling across a large component set. It supports application structuring conventions and packaging that help teams standardize how projects are organized. For organizations maintaining long-lived internal apps, these conventions can improve maintainability and onboarding consistency.
Commercial licensing complexity
Ext JS is commonly used under commercial licenses for production applications, and licensing terms can be a procurement and compliance consideration. Costs can be significant for larger teams or multiple applications, compared with many open-source web frameworks. Organizations often need to evaluate license scope, redistribution terms, and support entitlements before standardizing on it.
Steep learning curve
The framework’s component model, configuration patterns, and application architecture differ from many modern JavaScript frameworks and can take time to learn. Developers may need to adopt Ext JS-specific conventions for layouts, data stores, and component lifecycles. This can slow initial delivery and make it harder to hire developers already experienced with the framework.
Heavier runtime footprint
Because Ext JS ships a large UI component set and supporting infrastructure, applications can have larger bundle sizes and more client-side overhead than lighter-weight libraries. This can affect initial load performance, especially for public-facing or bandwidth-constrained scenarios. Teams may need to invest in performance tuning, selective builds, and careful component usage to meet strict performance targets.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Community (Community Edition) | $0 (1-year license; eligibility applies) | Full Ext JS core framework; 100+ components; limited commercial use for individuals/startups with <= $10,000 USD annual revenue and teams ≤5 devs. One-year term; register/approval required. |
| Pro | $1,499 per year / developer (Store listed) | Includes Ext JS core, Architect, Themer, IDE plugins, 12 months maintenance & support (annual subscription model). |
| Enterprise | $1,899 per year / developer (Store listed) | All Pro features plus advanced components, Sencha Test, D3 adapter, priority support, and additional enterprise capabilities. |
Notes:
- Sencha Store (official) lists Community $0, Pro $1,499/year/dev, Enterprise $1,899/year/dev. (Store: sencha official store).
- Sencha also publishes an Independent Consultant Program with lower unit prices for eligible consultants: Ext JS Pro $1,295 and Enterprise $1,895 (eligibility restrictions apply). These discounted prices are program-specific and require approval.
- A 30-day Enterprise trial is referenced on Sencha's official Community Edition/FAQ and store pages.
Seller details
OpenText Corporation
Waterloo, Ontario, Canada
1991
Public
https://www.opentext.com/
https://x.com/OpenText
https://www.linkedin.com/company/opentext/
