GitHub repository: nbelakovski/prima
Primary language: Fortran
Description: PRIMA is a package for solving general nonlinear optimization problems without using derivatives. It provides the reference implementation of Powell's derivative-free optimization methods, i.e., COBYLA, UOBYQA, NEWUOA, BOBYQA, and LINCOA. PRIMA means Reference Implementation for Powell's methods with Modernization and Amelioration,  "P" for Powell.