Medical

G4DNA

Geant4-DNA project

G4EMU

Geant4 European Medical User Organization

G4MED (in Japanese)

Geant4 Medical Physics in Japan

G4NAMU

Geant4 North American Medical User Organization

GAMOS

Geant4-based Architecture for Medicine-Oriented Simulations

GATE

Geant4 Application for Tomographic Emission