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

• T1.5.1-2098-g7915033ac Merge pull request #1163 from mbm-OR/bugfix/Fix-camera8-F9-crash
  Fix: Crash when using Camera 8 and F9.
  • 2f9e292d Fix: Crash when using Camera 8 and F9.
• T1.5.1-2096-g2dd8a4679 Merge pull request #1164 from mbm-OR/bugfix/Fix-F9-crashes-front-coupler
  Fix: F9 crashes with a front coupled single steam locomotive by Csantucci.
  • 1ad9889f Fix: F9 crashes with a front coupled single steam locomotive.
• T1.5.1-2094-g23fd156fa Merge pull request #1159 from Csantucci/skip-ruler-warnings
  Skip OR warnings about TSRE-specific token Ruler
  • 48c9a630 Skip OR warnings about TSRE-specific token Ruler

See more code changes

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

24 October 2025, 107MB

• 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.