Omniblox is a very good 3D Eagle .brd 3D viewer created by Benjamin D. Richards and David ten Have, but some script knowledge is needed to use it.
Looking to render printed circuit boards (PCBs)? Look no further. This script loads and renders them visually using a .brd file created by CadSoft EAGLE (version 6.0 or later).
There are a number of ways to render PCBs, but this script visualizes them as THREE.js models.
We’re still working on this, so the script isn’t 100% accurate. With that in mind, it’s probably best to use this as a visualization aid only — so don’t use it for to build anything ‘mission critical’ (for now…). And we’ve done our best to flag stuff that needs sorting.
Omniblox – Eagle BRD 3D viewer – [Link]