Ext JS has several licensing options available to fit a variety of needs including open source and commercial licenses. For more information, please visit the license page.
Community driven Ext support is available in the community support forums. If you are working on a project that requires comprehensive, commercial quality support we encourage you to take a look at the Ext JS Support Subscription packages.
The Ext SDK download contains the entire framework including all source files. Unzip the archive to your web server and navigate to http://your-server/<ext-directory>/docs to view the documentation and complete working examples. Any samples that use XMLHTTPRequest (Ajax) will require an HTTP webserver in order to work correctly.
API documentation for local installation. (Requires Adobe AIR)
DownloadTool to build a custom version of the Ext JS JavaScript containing just the classes and components you need. You should still use the links above to download the CSS, images, examples and documentation.
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