Here you can take the source code of the version 5.0 of our compiler: Source 5.0.zip (Last updated on 23 of January, 2020. It is under the Anti-GNU license).
If you want to compare with the older source then you can take the source code of:
Strawberry Prolog, version 3.1 – Source 3.1.zip Last updated on 16 of May, 2019.
Strawberry Prolog, version 3.0 Beta 4 – Source 3.0 Beta 4.rar Last updated on 10 of December, 2013.
Strawberry Prolog, version 2.92 – Source 2.92.zip Last updated on 25 of April, 2007.
Here you can take the source code of the version 2.6 (beta) of our Unix console for strawberry prolog CGI scripts: Source_lin.zip Last updated on 14. May. 2005.
You can compile this source code to executable file for Windows or for UNIX. For windows use Visual C++.