AMUSE: The Astrophysical Multi-Scale Environment

Bonsai: A GPU-enabled tree-code.

CUDA / OpenCL wrapper: Wrapper library for CUDA and OpenCL functions.

MUSE: the Multiscale Multiphysics Scientific Environment, a package to combine astrophysical codes.

MPWide: the light-weight communication library.

NBabel: N-body integrators in different languages.

Octgrav: A GPU-enabled tree-code.

Sapporo: A graphics library to calculate gravitational dynamics on your GPU! (Latest version 1.6)

SUSHI: A cosmological N-body code which can be used to simulate the Universe across supercomputers.