Simple Computer Aided Railway Modeller


SCARM means Simple Computer Aided Railway Modeller – a free software for easy and simple design of model railway layouts and railroad track plans.

With SCARM you can easily create the layout of your dreams – just download the setup package, install it and start editing your first track plan.

In SCARM you can use unlimited number of tracks and objects from more than 140 libraries and instantly see your design in 3D preview with a single click.

And don't forget – the most important is to have fun with the model trains

Follow SCARM on Twitter   


I just wanted to say "thank you" for SCARM. I have had one or two small problems and I am still learning some of the more complicated functions but 95% of the time I think it is a superb design tool. The 3D view of my multi-level design has been ideal for visualising some problems and designing appropriate supports.

Martin N.


Why in general to use SCARM?

  • Because it is easy and diverting and can be very useful
  • Because it has intuitive and lightweight user interface, that does not require extensive learning
  • Because it is FREE and has everything needed to start planning your dream railroad layout


SCARM 0.9.30 Multilingual  1.84 MB from 10 Sep 2015

System requirements:   Windows XP/Vista/7/8/10
OpenGL compatible graphics
Installation type:   Standalone installer
License:   Freeware

After installing, start the program and select your preferred language from "View" > "Language" menu.


What you can do with SCARM?

  • You can create complex layouts with many train stations on very large area
  • You can modelling flex-track routes easily, intuitive and most important – in very realistic way
  • You can deploy your layout on more than one level, with different heights and slopes of choosen sections from the track route
  • You can place tunnels and bridges
  • You can draw figures in order to create buildings of train stations, houses, industries, etc. together with all needed roads and infrastructure
  • You can use semaphores and color light signals to create the signalling in the layout track route
  • You can see a 3D view of your layout - just select "3D" button from the toolbar
  • You can measure distances and track sections length, using the functions in "Tools" menu
  • You can export and/or print your layout and show it to the other model trains fans and enthusiasts
  • You can view and print a list with the needed track pieces and even use it as a shopping list
  • You can share your ideas with the author, request new features and report bugs and errors, if you find some

Supported Track Libraries

Current version of SCARM supports more than 140 track and object libraries.*

* Some of the libraries are not fully completed. Data accuracy is not guaranteed. More libraries will come soon.

Information, Tutorials & Resources

The SCARM Blog is your ultimate source for updated information about the program. It contains many useful articles and resources about SCARM.

The blog contains the following categories:

Do not miss the video tutorials about SCARM created by Ruud Boer and J. B. aka Gilshrat.

If you look for examples and projects designed in SCARM, go to Layouts and Track Plans online database and search by scale, size, tracks and more.

Join us in the social sites, share your comments and stay up-to-date with all SCARM news and events.




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Useful Links

Check these links to other model train related sites and resources.

  • ANKA - Hearing aids, blood glucose & lactate meters, speech devices & cannulas, service and consumables
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