JMRI® is...


A better tool for programming decoders, simplifying the job of configuring DCC decoders from your computer


Design and Operate CRT based CTC control panels that reflect the real-time state of your railroad and let you control it


A system for Dispatching, grouping your Roster and Throttles


Build Trains from your Roster and print Train Manifests that detail the work your train crews will perform


A set of tools for using Audio with JMRI


JMRI provides powerful tools for working with your layout.

Layout Automation

Use JMRI to automate parts of your layout, from simply controlling a crossing gate to running trains in the background.

Supported Hardware

Supported Computers

Donate to JMRI

Donating to JMRI

JMRI runs entirely on volunteer labor. We have an impressive list of people who have worked on JMRI.

However, JMRI also needs contributions of money. We generally use open source and collaborative (i.e. no-cost-to-us) tools and infrastructure, but there are a few expenses related to JMRI software development that have to be paid for, including, but not limited to:

and other costs associated with keeping the JMRI code freely available and the developer and users communities connected.

Donations are greatly appreciated.

If possible, we prefer that you donate via PayPal. Just click on one of the buttons below, which will take you to a PayPal page for making a donation.

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If you don't want to use PayPal, please contact us directly via email and we can make other arrangements.