EXCITON+ is our in-house Gaussian-basis C/C++ MPI parallelised code for many-body calculations (GW and beyond) of positron interactions (binding, scattering and annihilation) in atoms and molecules.
EXCITON+ will be a bona-fide open source code, licensed under a Mozilla MPL v2.0. It is currently undergoing development to make it accessible for users external to our group.