RailModeller for is an application for creating model railroad and slot car layouts with 2D and 3D views. The market leader in its niche, the app has steadily evolved since its introduction in 2002. It features: a multi-brand Library of 200 track systems, building trackplans via Drag & Drop, 99 layers per layout, modelling of tracks at different heights & grades, automatic terrain generation, and full editing and export.