ModelView

Descent Manager's ModelView32 is the most popular program for the viewing and editing of Freespace POF files. Its features include the ability to edit turrets, subsystems, shield meshes, weapon banks, gunpoints and texture names, as well as providing a wealth of information about the model. A stable, intuitive interface and the ability to categorize and browse the models of VP files have seen Modelview become a foundation of Freespace modding.

You can download Modelview from the Descent Network, http://www.descent-network.com/ There is a version of Modelview with extended limits for the viewing and editing of high-poly models, available in this thread: http://www.hard-light.net/forums/index.php/topic,36980.0.html