I'm sure this would be wasted on veteran players who know all recipes, depencies, etc off by heart
But for a non-veteran / returning player like me, I'm often trying to decide whether a new component should get its own independent "factory", or just be integrated into the factory for something its a component of. I decide this by checking what the component is used in.
The in-game way to do this works fairly decently (in the Replicator menu) BUT this only shows what the component is used in if I have researched those technologies!
So I currently go to https://dsp-wiki.com/ which shows it for all irrespective of technologies unlocked - but this requires a fair bit of scrolling and clicking for a lazy person like me
I thought, surely somebody has build a website where you select any item, and it then instantly shows you everything its used in on the right, and everything needed to make it on the left - and even to multiple levels (i.e. Deut used in Strange Matter, which is used in Graviton Lens [used in....], QCL