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Open Source Version

Ext JS is also available under the GPLv3 for open source projects.

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When to use the commercial version

If you’re going to build a commercial application with Sencha Products, you must write your application code under the commercial license from the beginning of the application development process.

Ext JS Licensing Options

When to use the open source version

Download if you are creating an open source application under a license compatible with the GNU GPL license v3. Most important is that your source code must be available to your users so they can freely modify it for their needs.

Open Source FAQ

Ready to Buy?

Ext JS 4 commercial license(s) are available for purchase right from our website. When you’re ready to purchase your Ext JS 4 commercial license, visit our store.

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Support Subscribers

Version 4.1.3 and Version 3.4.1 are available to Sencha Support subscribers. Log in to download

Related Downloads

Ext JS 4.0.7
Ext JS 3 to 4 Migration Pack (Updated October 10, 2011)
Ext JS 3.4.0
Ext JS 2.3.0
Ext.Direct Pack
Sencha Cmd
Ext.Air Pack
JSBuilder 2

Ready to Buy?

Ext JS 4 commercial license(s) are available for purchase right from our website. Head over to the Sencha Store to Purchase a License

Current Customers

Current customers with a valid standard or premium support subscription can download the latest version on our Current Customer page