Welcome to the updated Xj3D codebase. References of interest:
a. Sourceforge home
https://sourceforge.net/projects/x3d/
b. Sourceforge archive
https://svn.code.sf.net/p/xj3d/code
c. Xj3D Evolution
https://www.web3d.org/wiki/index.php/Xj3D_Evolution
d. NPS Savage Developer's Guide: Xj3D
https://savage.nps.edu/Savage/developers.html#Xj3D
e. Legacy project site
http://www.xj3d.org