Vivaty Studio
http://www.web3d.org/realtime-3d/x3d-vrml/vivaty-studio-download
Vivaty Studio is an interactive tool for creating X3D worlds.
It allows the user to create all aspects of an X3D world with a graphical user interface.

The tool is provided free of charge as a service to the community.
Only a PC version is available.
During installation you will be required to agree to the following license.
Please read and accept at your own discression.
The Web3D Consortium takes no responsibility for this product,
including operation or support.
Note that Vivaty.com is not an operational domain.