Frequently Asked Questions

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Each Ext.NET license purchased includes free upgrades for all minor versions. Upgrading from version 5.0 to 5.1 to 5.x would all be free.

The Ext.NET license is a perpetual license and does not expire. Major version upgrades, such as from 5.x to 6.x, may require a new Ext.NET license.

Each Ext.NET license includes a minimum of one year Premium Support. At the end of your term, you can extend your Premium Support benefits by renewing. The Ext.NET license itself does not expire or become invalidated if Premium Support is not renewed. Two-year Premium Support is also available.

Ext.NET is licensed per Developer or sometimes referred to as per seat licensing. Each individual working directly with Ext.NET in an IDE (such as Visual Studio, Visual Studio Code, a text editor, or similar) is considered a Developer. Each Developer is granted the right to install and use Ext.NET on workstations used by that Developer for development purposes and to deploy Ext.NET on unlimited domains, sub-domains and servers.

Each Ext.NET license purchased allows one developer, acting within the scope of their employment as an employee, consultant, or a contractor to be licensed to use Ext.NET The Ext.NET license allows that developer to install and use Ext.NET on one or more workstations for development and to deploy web applications built with Ext.NET on unlimited domains and sub-domains hosted on unlimited servers.

Ext.NET licenses can be purchased in any quantity.

You will not owe royalties for your application if distribution of the Ext.NET software is done in accordance with the Ext.NET License Agreement.

The Ext.NET license includes a Trial License which will work unrestricted on http://localhost or Once uploaded to a web server, the framework will still function unrestricted, although your application will display an Unlicensed message. The trial license does not expire, so you can take your time to determine if Ext.NET is suitable for your project before purchasing a License Key.

No functionality is disabled with the trial license.

Once your Ext.NET license key has been added to your application, the Unlicensed message will be automatically removed.

An Ext.NET license is required for all Ext.NET enabled applications, both internally accessed (intranet or network) and externally accessed (internet or extranet).

Each person on your team modifying Ext.NET code requires a license. See Ext.NET license Pricing.

No. The Ext.NET license includes support for both Ext.NET Web Forms and Ext.NET MVC. A separate license for each is not required. Ext.NET also ships with an advanced Charting package, which is also supported in ASP.NET Web Forms and ASP.NET MVC. The Charting package is included in the Ext.NET license.
Yes. The Ext.NET license includes the right to use the Sencha Ext JS library as a part of Ext.NET, subject to the terms of the License Agreement. You do not require a separate Sencha Ext JS Commercial License to use Ext.NET, as rights are included to use Ext JS in commercial projects. The Ext JS library that is shipped with Ext.NET can be used separately from Ext.NET, such as in a pure JavaScript only Ext JS application.

The current release of Ext JS included with each release of Ext.NET is outlined on the download page.

Unfortunately, we are unable to offer any discounts on Ext.NET licenses. If you have any questions or comments, please feel free to contact our sales team directly (
Yes, although you must contact with your request to purchase using a Purchase Order. You will be provided with a custom checkout option.

Purchases made directly from the Ext.NET Store will be presented with several Payment Options, including the following:

  • Credit card
  • PayPal
  • Wire transfer
  • Check/Money order

You may be presented with country specific payment options, such as country specific credit cards.

Once the full payment has been received, your official Ext.NET license key will be delivered by email. All Ext.NET payment processing, including credit card and wire transfer payments, are provided by our world wide reseller, Cleverbridge. Once Cleverbridge has received full payment, they will notify our licensing system and your official Ext.NET License Key will be generated.

We do not deliver license keys until full payment has been received and confirmed.

We are not able to provide a refund once an Ext.NET License Key has been delivered to you. Please take your time evaluating Ext.NET with the Trial License before proceeding with a purchase.