XTrkCADXTrkCAD 
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XTrkCAD (notepad.exe). XTrackCAD is a CAD program for designing model railroad layouts. You can easily create layout of any scale or size.
XTrackCAD is a comprehensive CAD program for designing model railroad layouts of any scale or size. With intuitive tools and fast editing, it delivers an easy CAD track planning experience ideal for beginners and experts, supporting long-tail needs like best model train layout planner workflows and realistic railway simulation design.
Build layouts using extensive libraries for many brands of track and turnouts, or customize your own components with the built-in editor. You can design in any gauge, add your favorite pieces, preview detailed plans, and test your creation by running trains for a smooth, accurate layout overview.