Sencha Inc. | HTML5 Apps

Ext JS 3.4 Cross-Browser Rich Internet Application Framework

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Sencha Licensing for Ext JS

Ext JS Licensing Options

Ext JS is licensed under one open source and two commercial license options. Read more to find out which one is right for you.

Commercial Software License

This is the appropriate option if you want to use Ext JS to develop commercial applications whose source code you want to keep proprietary.

View our Commercial Software License
Read more about our Commercial Software License

Commercial OEM License

This is the appropriate option if you want to use Ext JS to create your own commercially licensed SDK, or web application builder. Since use cases vary widely, Commercial OEM licenses are customized for each customer.

Contact us to learn more

Open Source License

Sencha is an avid supporter of open source software. Our open source license is the appropriate option if you are creating an open source application under a license compatible with the GNU GPL license v3. Although the GPLv3 has many terms, the most important is that you must provide the source code of your application to your users so they can be free to modify your application for their own needs.

Open Source FAQ
View the license terms

If you would like to use the GPLv3 version of Ext JS with your non-GPLv3 open source project, the following FLOSS (Free, Libre and Open Source) exceptions are available:

Open Source License Exception for Applications
Open Source License Exception for Development