GPTO GPTO is an educational MATLAB code to demonstrate the use of the geometry projection method for topology optimization.  The code is available for free under a Creative Commons CC-BY-NC 4.0 license, which means it is free for non-commercial use and that appropriate credit must be given.  The accompanying journal paper can be found here. The code can be downloaded from GitHub here. Optimal design of MBB beam obtained using GPTO MATLAB code