Download > Versions

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.

Updater

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 > System

Open Rails will check for updates at most once a day. When it finds one, it raises a red flag in the Notifications icon.

Use the "What's new" button to find out more about an update or the "Install" button to launch the automatic update process:

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 most Fridays) 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

• T1.5.1-2068-g0d2de70b7 Merge pull request #1120 from SteelFill/auto_friction
  Automatically Calculate Friction Values if Missing
  • 47e9955e Tweaks in response to review
  • ba3c47fa Clean up after cherry picking
  • 786a44e4 Improve utility of verbose logging, expand capabilities of automatic friction calculation
  • 5bdba4f1 Automatically calculate friction values based on the bearing type
• T1.5.1-2063-g9e88e3ae1 Merge pull request #1162 from cjakeman/update-dds
  specifies precedence of DDS over ACE
  • 2516ccea specifies precedence of DDS over ACE
    Describes the tolerant behaviour if filenames don't match references.

See more code changes

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

10 October 2025, 106MB

• Installation Guide (English)

The documents included in the Testing Versions downloads can be found on-line at:

• Architecture Diagram V1.pdf
• Contenct checker.pdf
• How to Provide Track Profiles for Open Rails Dynamic Track.pdf
• Installation Guide En.pdf
• Localization Manual.pdf
• Manual.pdf
• ORTS Trackviewer manual.pdf
• Processor Flow Chart.pdf
• timetable-editor_de.pdf
• timetable-editor_en.pdf

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.

The Manual for the Unstable version is not included in the download, but is available on-line.

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

Improvements

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.