The Download page on the main JMRI website provides links to download various JMRI versions, along with links to release notes, etc. Note that there are different downloads for different types of …

If just starting, this is the version for you. Development Version: The version that is under development for testing and is used to validate new features and changes to existing features. If you are familiar …

This will install JMRI to the default location, place shortcuts for DecoderPro and PanelPro on the desktop and create a JMRI Start Menu folder containing shortcuts for typically used JMRI programs.

Behind the scenes, DecoderPro is configured using text files, so that it can be adapted to additional decoder types easily. It talks to the decoders using the JMRI programming interface, so that it can …

JMRI is intended as a jumping-off point for hobbyists who want to control their layouts with a computer without having to create an entire system from scratch. You can manage your locomotive rosters and …

Most of the decoders in locomotive samples will be Digitrax, except for sound examples. This entire manual has been updated to correspond to JMRI® v3.6 DecoderPro only, and the SHTML verified …

After a single decoder is selected in the listing on the left, the right-hand side will open and allow entering a unique roster ID and the (current) decoder address.

The Crandic Automated Traffic System (CATS) is a JMRI-based application by Rodney Black for controlling and operating a model railroad. There's more information on the CATS website.

JMRI® requires that Java be installed, whether your computer is macOS, Windows, or Linux based. Version 2.12 can run on any computer system that will run Java 1.5 or later.

Also if you change your system configuration, OR if you have your laptop away from the railroad, but you want to play with JMRI there is a simulator mode you may want to try.