FreeWRL is an open-source VRML and X3D browser written primarily for the Linux (Unix) and OS X platforms.

FreeWRL can be run standalone, or within most html browsers. FreeWRL can also be accessed via both the EAI and SAI interfaces to enable control of visual content via an external programming interface.

FreeWRL is used to view models built by hand, or generated from other programs, such as Geant4, Nagios, Wings3d and White-Dune.