OBJ is a long-lived mesh exchange format used across modeling, scanning, visualization and print workflows. Files can range from a simple polygon mesh to a scene with material libraries and texture references.
A full modeling suite is appropriate when you need to edit topology or author materials. For a quick review, 3D Viewer Pro provides a smaller workflow: open the OBJ, inspect the rendered form, read geometry statistics and use diagnostic shading modes.
Because rendering is local, the viewer is also practical for client assets and internal prototypes. The OBJ file is not uploaded to GlobalCore Labs.