Manufacturer:
(open source) (click for web site)
Product Type:
software
Notes:
The application XTrkCAD is an open-source, freely-available project built and maintained by a group of dedicated modelers. It runs on Windows, Mac, and Linux.
Manufacturer:
Centauri Digital (click for web site)
Product Type:
software
Notes:
The company offers Web-based track planning. They do not appear to support S, currently, but it appears to be an active project.
Manufacturer:
DRail Software (click for web site)
Product Type:
software
Notes:
The company sells the AnyRail software application that only runs on Windows 10 or newer. It has built-in libraries for A.C. Gilbert, American Models, FastTracks, GarGraves, Lionel, and MTH track components.
Manufacturer:
El Dorado Software (click for web site)
Product Type:
software
Notes:
The company sells a software application called 3rd PlanIt, which runs on Windows 7 and newer, as well as on the Apple Mac. The application has libraries for A.C. Gilbert, FastTracks, and Lionel. However, it is very flexible and so you can design just about anything in it.
Manufacturer:
Isle of the Kakapo (click for web site)
Product Type:
software
Notes:
The company sells the RailModeller Pro software application that only runs on the Apple Mac. They have libraries for A.C. Gilbert, American Models, GarGraves, Lionel, MTH, and S-Helper Service track components.
Manufacturer:
Milen Peev (click for web site)
Product Type:
software
Notes:
Roadbed for use under A.C. Gilbert straight track. Available in black or gray, with matte or glossy filler ties.
Manufacturer:
Ngongo-B (click for web site)
Product Type:
software
Notes:
The Dutch company offers a Web-based track planning interface called Trax 3D.