The most significant hurdle for anyone looking for a "free download" today is that the software is effectively "abandonware." Because it relies on older versions of DirectX, it is notoriously difficult to run on modern Windows 10 or 11 systems. It does not support DirectX 10, 11, or 12.
Alternatively, check the 3D Ripper Pro output directory for globally captured .obj files if you enabled that option in the global settings. Limitations and Common Troubleshooting 3d Ripper Pro Free Download