Softeners are common textile treatments that affect many textile properties. The chemical structures of softeners determine their effectiveness. This study focused on the effect of softener type; e.g., micro or macroemulsions of polysiloxane, fatty acid, or quaternary ammonium on 100% PET woven fabric properties including drapeability, lightfastness, color evaluation, and breaking strength. Softeners that gave better drapeability and soft hand were identified, and their effects on other important end use properties were examined. Various softener types had significant effect on these fabric properties, with differences in electrical charge between softeners of the same type being an important parameter. The hydrophilic polysiloxane softener type was found to be the most suitable for application on PET woven fabrics.