5ced8212_World_Building_Tools__Tools_used_to_create_a_world
[Virtual world environment] SenseMedia's Sprawl [Tools used to design avatars] Avatars are build out of VRML components [Tools used to create a world] 
Worlds can be built out of VRML 1.0 and 2.0 files using any 3D VRML authoring tools.
World Building Tools
Tools used to create a world