Rocrail is a free application for Windows, Android, and more designed to control model train layouts.

Rocrail allows train and tech lovers to control their model railroad and accessories completely. Your trains can be either manually controlled or completely controlled by the software in automatic mode. There is also a mixed operation that allows you to control some trains manually and other trains in fully automatic mode.

Rocrail has a few different applications for train control:

A Dispatcher Panel for manually operating an analog or digital train
Continuous digital operations, semi-automatic, or based on schedules, or Automatic
Control of car systems, ambient lighting systems (weather, time of day simulation) and other accessories

Rocrail can be used three different ways:

Rocview - the traditional user interface, installed with Rocrail
Rocweb - web client for all (also mobile) devices
andRoc - for all Android based devices

Rocrail has so many features one could write a book on it. If you're new to it, we recommend you start with their Step-by-Step Tutorial.