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 > 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

• T1.5.1-2001-ga5be12922 Merge pull request #1153 from rwf-rr/fix-tritems-in-track-viewer
  Fix TrItems in track viewer (events were over-writing mileposts)
  • d2f2a025 Add path name to Chart Window title.
    Appends to the default title from the properties.
  • b6baa4c9 Remove unnecessary code that counts the events.
  • eadd0820 Fix adding events to the standard TrItems array.
    This fix collects the events in a list, and at the end resizes the array
    and adds the events.
    The existing code already counts the number of events (in cnt). Thus the
    array could be extended before the second loop over activities, and the
    events added directly.
• T1.5.1-1997-g9357ae784 Merge pull request #1154 from openrails/release/1.6
  Merge pull request #1151 from twpol/feature/ace-dds-content-only
  • 0143dee5 Merge pull request #1151 from twpol/feature/ace-dds-content-only
    fix: Do not allow non-ACE/DDS textures in content

See more code changes

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

22 August 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.