JMRI: Disclaimer, Trademark, Copyright and License Information

If you have any questions about the information on this page or what it means to you, please contact us directly.


"JMRI" and "DecoderPro" are registered trademarks that belong to us. The names "PanelPro", "DispatcherPro", "SignalPro", "SoundPro", "TrainPro", "Logix", the associated logos and the DecoderPro logo are our trademarks. Registration is in progress in both the United States and other countries.

Oracle and Java are registered trademarks of Oracle. Sun, Sun Microsystems, the Java Coffee Cup logo, and the Duke logo are trademarks of Oracle.

Other terms may be the trademarks of other organizations.


All images and text on this web site are Copyrighted © 1997 - 2018; All rights reserved.

Images and text linked to on other sites may or may not be copyrighted, please check with their respective owners.

All of the code, documentation and auxiliary files distributed by the JMRI project are copyright 1997 - 2018; All rights reserved. See the next section for information on the usage license.


JMRI is licensed under the Free Software Foundation's "GNU General Public License" (GPL) version 2.0, with the Classpath Exception. Copies of that license are distributed with the source and executable downloads, and can be gotten from the web.

Please see the Free Software Foundation's website for a discussion of what "free software" means; it's about freedom, not about cost.

This is an Open Source license; for more information on that, please see the Open Source Initiative web pages, including their description of what Open Source means and their certification of the GPL version 2.

Creative Commons License JMRI documentation written by the the JMRI community, including but not limited to the web site contents, is available under the Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0) license.

If you have any questions about these licenses or what it means to you, please contact us directly.


Any data contained on this site is just our opinion. We strive to be accurate. We would love to hear if we have any misunderstandings, but we make no warranties of accuracy.

Mention of any service or organization is just a comment and not an endorsement.

The NMRA has no involvement with or responsibility for JMRI. The NMRA provides their Standards and Recommended Practices without warrantee.