Application development is complitely free. Furthermore, you can deploy the developed application for testing and validation at the development time.
You can obtain a free license for production use in small workgroups from IT Mill License store. This license covers use of 4 active users concurrently using the application in one server.
A commercial license must be obtained for production use of the applications that use IT Mill Toolkit libraries. Free and low-cost license alternatives for limited number of concurrent users are available.
A deployment license is required for each deployed copy of a program that uses Millstone libraries. To be more exact, each Java Virtual Machine (JVM) that runs a program that uses IT Mill Toolkit libraries, must have an unique deployment license. For example, if the program is deployed to multiple servers (for load balancing or other reasons), each server needs an unique license.
Deployment licenses can be purchased online from IT Mill Ltd.
If you are interested in OEM-license for your product, please contact sales at IT Mill Ltd.
The actual legal license text is in license.txt.
Technically license is stored as itmill-toolkit-license.xml -file, that is usually store in WEB-INF -directory of the web-application. The license file contains information about the scope and limitations of the lisence in fairly readable form, so you might want to check the file contents. Toolkit package is shipped with unlimited license for development and testing purposes.
The previous version 3 of the product was called Millstone User Interface Library. Millstone library was licensed with very liberal LGPL-license. The new version 4 of the library, is not licensed with open source license. The latest free release of Millstone User Interface Library (version 3.1) can still be found from sourceforge.
Why did we change the license? Putting a clear transparent pricing model on the product makes our customers decision-making easier. They know how much they are paying for and what whey get for their money.
If you want to use the IT Mill Toolkit for teaching programming, web development or user interface design, you can apply for educational license by contacting sales at IT Mill Ltd.