SCInterface licensing works on a dual licensing model. This allows those individuals who wish to use it for educational use to experiment with SCInterface as they see fit. This also promotes the Open Source Initiative. If you are going to use SCInterface in a commercial product, appliance or service, the commercial license is the correct choice. The commercial license benefits include being able to obtain technical support at no additional cost and access to advanced SConnectors, macros and permits organizations to not release their application source code. Basically, commercial users are free from having their application, service or appliance source code made available to the public.

Here are some examples of where a commercial license must be used:

• Selling software that includes SCInterface to customers who install the software on their own machines.
• Selling software that requires customers to install SCInterface themselves on their own machines.
• Building a hardware system or appliance that includes SCInterface and selling that hardware system to customers for installation at their own locations.

Here is a general overview of each license:

• Commercial License: This license is required for organizations that do not wish to release their source code when used with SCInterface. This includes the SC (Server Controller), SCM (Server Control Manager) and the multiple APIs (Application Program Interfaces) that are available with SCInterface. All hosted customers benefit from the commercial license.
• Open Source License: Based on the GPL, this license allows you to use the software for not charge (even evaluation purposes); however, the complete source code must be made available and freely redistributable under reasonable terms. We also recommend a reference to SCInterface is placed on any interface. Acceptable references to SCInterface include:
• Powered by SCInterface OL (Open License)
• SCInterface OL (Open License)

The commercial non-GPL SCInterface license (applicable for the GL, GLS, or GLT Packages) is based on the number of SCMs and quantity of SCs that connect into each SCM. The licensing is only restricted at the SCM level and SC licenses cannot be shared across SCMs. Therefore, if you have two SCMs with a license to run 10 SCs on each, 10 SCs licenses would need to be purchased for each SCM. There are no restrictions on the type of platforms that the SCM or the SC is running on or the number of CPUs.

Basically, we encourage anyone to test and demonstrate the capabilities of SCInterface under the GPL license. This also provides an added benefit to those organizations who wish to inspect the source code prior to purchasing a commercial license. However, if you distribute a proprietary product or application with SCInterface and your source code is not GPL, you must purchase a commercial license. Business and government users should use the commercial license because it releases you from the strict requirements of the GPL license.

SCInterface trademark information and logo usage can be viewed at http://www.scinterface.com/trademark.html.