Download the Shadows software

Download Shadows software and start using it immediately. It is a free software in its base version and yet offers a large set of features to design and draw sundials. Shadows is used around the world by thousands of enthousiasts.



Download the installation guide » (PDF, 1.2 MB).

In case of problem please look at the frequent questions, thanks.

The files were tested with a professional anti-virus program (ESET NOD32) before the publication. You will install the program at your own risks. Only the version available on this site has been controlled by the author. The author denies any responsibility in case of problem with files downloaded on mirror sites.

Note: sometimes, this site or the Shadows download file is detected as unsecured by an anti-virus. It is a false detection. The solution consists in temporarily deactivating the anti-virus in order to download Shadows and then to reactivate it before the installation. You may check the site on


If you want to use the advanced features of Shadows Expert or Shadows Pro, you need to buy a license


User Manual

A complete user manual is now available in PDF format. It contains more than 150 illustrated pages explaining in details all features of Shadows Pro.

View the user manual online

History of versions

History of all published versions

Locations database

Shadows is provided with a database of more than 6,000 locations all around the world. You can download additional databases by country, a total of 280,000 locations.

Additional location databases

Technical specifications

Shadows is developed primarily for Windows 11/10 and is compatible with Windows 8.x, Windows 7 and Windows Vista. It requires a 64-bit Windows (compiled for x64, not ARM). Shadows is not compatible anymore with Windows XP or older versions. Note also that Shadows, as other desktop applications, is not compatible with Windows RT. Some users are running Shadows on Linux or Mac OS with a Windows emulator (for example Parallels Desktop 4 for Mac OS X) or under Wine on Mac OS X (see Wine). Note that new Mac with Apple Silicon processors (M1, M2, M3) are not able to run x64 Windows applications, and therefore are not compatible with Shadows.

Check the compatibility on your platform by installing the freeware version. If the freeware works fine, then Shadows Expert and Shadows Pro will work.

It is recommended to have at least 4 GB of RAM. 3D visualizations require a graphic board compatible with OpenGL version 3.3 minimum.

The user interface of Shadows is translated in English, French, German, Italian, Spanish, Portuguese, Greek, Brazilian, Dutch, Hungarian, Slovenian, Polish, Czech, Arabic, Catalan, Russian, Romanian. View the translation status
The user manual in PDF format is available in English, French, German, Italian, Spanish and Czech.

32-bit Version

The current official version is a 64-bit application that requires a 64-bit version of Windows. If you run a 32-bit version of Windows 7, 8 or 10, it is still possible to download a 32-bit version of Shadows. This version is not up-to-date and does not include the user manual (that you need to download separately). The 32-bit version does not have anymore the automatic detection of a new version as with the 64-bit version. Therefore you need to visit this page manually to check if a new version is available. The 32-bit version will eventually be abandonned.

Download Shadows (32-bit) » (4 MB) date July 14, 2020

Continue with next page: Feature List of Shadows Levels