The above list of software is the minimum required for a non-graphical setup of Geant4. To use visualization graphics in Geant4 and/or a graphical user interface (GUI), at least one of the following graphic systems or packages is required in your computing environment:
X Windows
DAWN , a PostScript renderer
Open Inventor (free software from SGI)
Open Scientist (Interactive environment, including GUI)
WIRED3 HepRep Browser ( HepRep Browser)
WIRED4 JAS Plug-In ( HepRep Browser)
VRML browser
Alternatively, you can produce an ascii file for VRML or DAWN.
More information is available in Section 8.6, Visualization Drivers, of the User's Guide for Application Developers.