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Java Model Railroad Interface

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JMRI (Java Model Railroad Interface) is an open source program for model railroad hobbyists.

JMRI is a suite of applications distributed via a single download. The two most popular tools are DecoderPro for programming DCC decoders, and PanelPro for controlling layouts.

Starting in 2005, the primary JMRI developers was involved in a legal dispute with Matt Katzer. The case was eventually settled in 2010 in the United States District Court for the Northern District of California, but not before the Court of Appeals for the Federal Circuit made an important ruling that infringing on the copyright of even freely licensed software could result in monetary damages. The appellate ruling then became law through the 9th circuit, which includes California and Hawaii. [1]

  1. ^ [1]. "A Big Victory for F/OSS: Jacobsen v. Katzer is Settled"