SwirlX3D
- A visual authoring system for X3D which provides full X3D editing with the ease of use of a graphical environment.
- http://www.pinecoast.com/swirl3d.htm

Xj3D Project
- A project of the Web3D Consortium focussed on creating a toolkit for VRML97 and X3D content written completely in Java.
- http://www.xj3d.org/

Web3D Consortium - X3D Documentation
- X3D introduction, FAQ, X3D and related specifications, examples, tools.
- http://www.web3d.org/x3d/

VRMLmagic
- A tool for creating interactive 3D web pages in the VRML/X3D/Web3D format.
- http://www.scintillatinggraphics.com.au/VRMLmagic/