Ask HN: What is the best software to visualize a graph with a billion nodes?

Currently I am using GraphViz. But I am not happy with the quality of output (It is writing a postscript file).

I want to be able to zoom in and zoom out. Graph has upto 100B nodes and is directed cyclic graph.

try dGraph or Aerospike

what decision / downstream process is going to consume the 1B node graph render? is producing a render really necessary for that decision, or is rendering the graph waste?

is there a way you can subsample or simplify or approximate the graph that'd be good enough?

in some domains, certain problems that are defined on graphs can be simplified by pre-processing the graph, to reduce the problem to a simpler problem. e.g. maybe trees can be contracted to points, or chains can be replaced with a single edge, or so on. these tricks are sometimes necessary to get scalable solution approaches in industrial applications of optimisation / OR methods to solve problems defined on graphs. a solution recovered on the simplified graph can be "trivially" extended back to the full original graph, given enough post-processing logic. if such graph simplifications make sense for your domain, can you preprocess and simplify your input graph until you hit a fixed point, then visualise the simplified result? (maybe it contracts to 1 node!)

It is somewhat old-school, but Gephi is by far the best graph visualization tool I've used that stays robust and usable at such scales (at least ~10M, but possibly a lot more).

If it's text-heavy I'd recommend Obsidian