Oh My Product Hunt - An open-source Android app for Product Hunt
SCARM - Simple Computer Aided Railway Modeller
TRAX - Trax is a free web-based tool for planning your model railroad
RailModeller - RailModeller is a new application for creating model railroad and slot car layouts.
TrainCad - Freeware Microsoft Windows program for designing model railroad layouts using standard tracks.
WinTrack - Track planing software