JMRI
By Drew
Legal disclaimer: Although the developer of Train Throttle has contributed code changes to JMRI, JMRI is not associated with Train Throttle in any form.
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 with a computer without having to create an entire system from scratch.
If you would like to donate financially to the JMRI project, please do so at jmri.org/donations.shtml.