Freshkiss3D is a software solving the 3D hydrostatic and incompressible Navier-Stokes equations with free surface and variable density. It uses stable and robust numerical methods developed by the Inria team ANGE to simulate a wide variety of hydrodynamic flows like hydrological disasters such as tsunamis and floods, hydrodynamics-biology coupled flows with species convection-diffusion, Lagrangian particle tracking or geophysical flows such as thermohaline stratification. Find more about Freshkiss3D’s numerical methods in References.