X3D is the open-standard format for 3D graphics scenes on the Web.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
Game engine supporting many 3D/2D formats and graphic effects
A language for making art using mathematics
X3D Prototypes for the SMUOS Component
A 3d rendering framework
This project migrated to https://github.com/gpac/gpac/
Game engine supporting many 3D/2D formats and graphic effects
diagrammatic 3D in a web browser using SVG
The X3DV Module Suite is a free set of Netbeans modules to code in X3D