
waLBerla
Massively parallel framework for multiphysics simulations with a focus on the lattice Boltzman method

lbmpy
Fast fluid simulations based on the lattice Boltzmann method in Python

pystencils
Code generator for stencil codes

HyTeG
Matrix-free finite element framework based on geometric multigrid
TerraNeo
Exascale framework for earth mantle convection simulation

ExaStencils
Code generation framework for geometric multigrid solvers

pe
Framework for massively parallel rigid body dynamics (now part of waLBerla)