  We introduce the package SWANLOP to calculate scattering waves and
corresponding observables for nucleon elastic collisions off spin-zero nuclei.
The code is capable of handling local and nonlocal optical potentials
superposed to long-range Coulomb interaction. Solutions to the implied
Schr\"odinger integro-differential equation are obtained by solving an integral
equation of Lippmann-Schwinger type for the scattering wavefunctions,
$\psi=\phi_{C} + {G}_{C} {U}_{S}\psi$, providing and exact treatment to the
Coulomb force [Phys. Lett. B 789, 256 (2019)]. The package has been developed
to handle potentials either in momentum or coordinate representations,
providing flexible options under each of them. The code is fully
self-contained, being dimensioned to handle any $A\!\geq\!4$ target for nucleon
beam energies of up to 1.1 GeV. Accuracy and benchmark applications are
presented and discussed.
