The JMRI project is building tools for model railroad computer control. We want it to be usable to as many people as possible, so we're building it in Java to run anywhere, and we're trying to make it independent of specific hardware systems. JMRI is intended as a jumping-off point for hobbyists who want to control their layouts from a computer without having to create an entire system from scratch. JMRI provides the DecoderPro and PanelPro applications, tools for model railroaders who want to configure DCC decoders and create control panels.