JMatter is offered under a dual licensing model. We feel this is the most liberal form of licensing software.
You have the choice of using either of the following two licenses:
Open Source License
If you intend to use jMatter for open source projects, jMatter is offered under the GNU Public License (GPL). This license allows you to use the software at no charge under the condition that if you use jMatter in an application you redistribute, the complete source code for your application must be available and freely redistributable under reasonable conditions.
This license allows you distribute jMatter-based applications. This license is for organizations that do not want to release the source code for their applications as open source / free software. See pricing for more information.