nlopt: nlopt (library for nonlinear optimization) nlopt: nlopt: NLopt is a free/open-source library for nonlinear optimization, nlopt: providing a common interface for a number of different free nlopt: optimization routines available online as well as original nlopt: implementations of various other algorithms. nlopt: nlopt: Homepage: https://nlopt.readthedocs.io/en/latest/ nlopt: nlopt: nlopt: