Open Rails

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Three Versions of Open Rails

Three versions of Open Rails are readily available to users, as shown below:

For first-time users, we recommend the Stable Version which comes with an installer.


Whichever version you choose, Open Rails has a mechanism to notify you of new versions and to update Open Rails for you. You will find the settings for this mechanism in Menu > Options > Update

Open Rails will check for updates at most once a day. If an update is found, then you can install the update just by clicking on the link in the top, right corner:

Testing Version

If you follow the Open Rails project on the forums, then you will hear about bug-fixes and new features. These are included in the Unstable Version for developers and testers to try out. Once they have been checked and approved, they are published (on Friday) as the latest Testing Version. Any user can easily update to the current weekly Testing Version and benefit from these improvements.

For reference all the Testing Versions (executable and source) can be found in our archive.

Recent Code Changes

  • T1.5.1-664-gd39447273 Merge pull request #877 from peternewell/duplex_engines_initial
    Initail build of duplex steam
    • 55f9ddd4 Correct indent
    • a76c45bd Improve code style
    • a0bd9ec7 Style changes and iput key corrected
    • ce3490b7 Correct parameter name as per recommendation.
    • c567eba3 Initail build of duplex steam - addition of control commands only
  • T1.5.1-658-g66411058c Merge pull request #857 from SteelFill/air-flow-meter
    Adding Air Flow Meters
    • 9afc8c35 Update flowmeters on trailing locomotives to prevent stuck indications when changing cabs
    • cb3f1c0a Adding liters per minute as a cabview unit
    • 076c77a7 Adding CUBIC_M_S as valid cabview unit, documentation improvements
    • 22312be6 Fixing minor style issues, and adding support for both spellings of 'liter'
    • 7931a52d Removing some unneeded 'using' statements that appeared unexpectedly
    • 14d79c7e Initial addition of air flow meters
  • T1.5.1-651-g45d8b7ff4 Merge pull request #853 from sweiland-openrails/OutOfFocus
    Notify out of focus
    • d05f5817 Bugfix: when changing to full screen the out-of-focus red rectangle is now taking acount of the change
    • a9760ec2 Replaced the option OutOfFocus" with check on option SuppressConfirmations
    • 36736cee Solved Codacy issue
    • 52a513dd Solved the saving bug
    • 8357922c set default "out of focus" option to true
    • c8f02ad1 Solved merge conflict?
    • 7b58e773 Might fix the last Codacy error
    • 00060a8a Some "Codacy Static Code Analysis — 4 new issues (0 max.) of at least minor severity." solved
    • d4518c6e "CodeFactor — 1 issue found." solved
    • 0afa5877 Notify out of focus
  • T1.5.1-640-g3d7b05457 Merge pull request #855 from cjakeman/website-news01
    Adds new route from TrainSimulations
    • b39e5d86 Adds new route from TrainSimulations

See more code changes

The current Testing Version can also be downloaded as a Zip archive:


29 September 2023, 91MB

Note: Multiple versions of Open Rails will not interfere if they are saved to different folders.

Unstable Version

To support development, the latest unstable version is also available, which is updated whenever a developer publishes a change. The unstable versions are more likely to contain serious bugs and are only recommended for users wishing to help with Open Rails development.

For reference all the Unstable Versions (executable and source) can be found in our archive.


Improvements to Open Rails are drawn from several public sources as shown here:

We try to make sure that these changes all work and fit together by reviews as marked in orange in the diagram.