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Ext JS 4.2.0 is also available under the GPLv3 for open source projects, which may require the release of your code. First, make sure your project meets our requirements. Download the GPL version: Download
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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.
Version 4.1.3 and Version 3.4.1 are available to Sencha Support subscribers. Log in to download