For layout I have found nothing faster than mars <a href="https:&#x2F;&#x2F;github.com&#x2F;marckhoury&#x2F;mars" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;marckhoury&#x2F;mars</a>. I have to work with graphs of hundreds of millions of nodes. Just looking at fragments of them of tens of thousands of nodes in reasonable time requires something like mars. I have not found anything else remotely as scalable.