WinTrack - Track planing software
TrainCad - Freeware Microsoft Windows program for designing model railroad layouts using standard tracks.
AnyRail - AnyRail makes model railroad design so easy, it's fun!
TRAX - Trax is a free web-based tool for planning your model railroad
Empire Express - Empire Express: Model Railroad Design for Mac
WinRail - WinRail is a computer software product for designing and drawing model railway layouts.