Web3D was initially the idea to fully display and navigate Web sites using 3D. By extension, the term now refers to all interactive 3D content which are embedded into web pages html, and that we can see through a web browser. Modern Web3D pages are commonly powered by WebGL.
Nowadays many formats and tools are available, including:
3DMLW
A-Frame (VR)
Adobe Shockwave
Altadyn
BabylonJs
Blend4Web
Data-constrained modelling (A software tool which can convert volumetric data to Web3D)
Java 3D
JOGL
LWJGL
O3D
Oak3D
PlayCanvas
ShiVa
Unity
Virtools
VRML
Viewpoint
Web3D Consortium
WebGL
WireFusion
X3D (extension of VRML)
Additive Manufacturing File Format
They are mainly distinguished by five criteria:
Simplicity (Automatic Installation, rates facilities already high)
Compatibility (Windows, Mac, Unix ..)
Quality (Performances, see Frames per second, and indirectly display quality)
Interactivity (Depending on the solutions, their programming opportunities, the creators of content have more or less freedom in the creation of interactivity)
Standardization (none, "market position", by a standards organization, etc.)