GeoCoPS is an interactive program for the design of geosynthetic tubes. For a given problem, the geometry of the tube and the circumferential and longitudinal required strength of the encapsulating geosynthetic are produced. The computations account for reduction factors related to seam strength, durability, creep and installation damage. Results are obtained by solving a differential equation subjected to design constraints. The user, however, is not directly involved with the calculations thus no knowledge of differential calculus is needed... GeoCoPS can also provide the consolidated shape of the tube in an approximated manner. This may be important for assessing storage capacity or for construction of structures such as levees.