gpops-ii has been used extensively throughout the world both in academia and industry. published academic research where gpops-ii has been used includes refs., where the software has been used in applications such as performance optimization of formula one race cars, ref. where the software has been used for minimum-time optimization of low-thrust orbital transfers, where the software has been used for human performance in cycling, ref. where the software has been used for soft lunar landing, and ref. where the software has been used to optimize the motion of a bipedal robot.