Two versions of GDDCALC have been developed, one for Microsoft Windows and one for Linux. The Windows version can be downloaded at the link below. Click here to learn about the Linux version. This software is free of charge; it is uncopyrighted and has been placed in the public domain. This means basically that you can do what you want with the source code and the executables.
The Windows version of the program was written in the C language and uses the Win32 API to access Windows services. That means it should run on any version of Windows that retains backward compatibility with Windows NT. We have tested it under NT, Windows 7, and Windows 10. The code was written and compiled in the Dev-C++ development environment.
Click here to download the Windows application or here to download its source code.
Both downloads are zip archives. You should unzip the application archive to a directory named gddcalc. No further installation is needed, since GDDCALC does not utilize the Windows registry. Use Explorer to create a shortcut to gddcalc.exe and drag the shortcut to your desktop. You can then run GDDCALC by clicking on the shortcut.
We hope you will let us know how well or poorly GDDCALC works with your operating system. You can email us at this address. As with any open source project, we appreciate and encourage bug reports and other enquiries. Although GDDCALC was designed with Western Oregon in mind, a specialized version has been deployed in South Africa.
And now the fine print:
GDDCALC is offered without warranty, express or implied, nor do we assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, method, or software on this website. The software offered here has been tested on several platforms but is not guaranteed to work on yours. It is provided here as a convenience.