A production calculator for Factorio 2.0 and Space Age: pick an item and a rate and it works out every machine, belt and raw input, as a table or a flow graph.
Ask for 60 red science a minute and the calculator counts the assemblers, furnaces and drills behind it, the belts each line fills and the iron and copper ore it eats. Click any row for its exact ratios: how many machines feed how many of the next, and what one full belt keeps running.
Plan on Nauvis, Vulcanus, Fulgora, Gleba or Aquilo with the machines each planet can build. Add modules and beacons, set machine quality, and see leftover byproducts such as heavy oil along with the fixes that use them up.
The table groups every item by what to build here, bring in or mine. The graph draws the same plan as production lines with belt counts. The address bar holds the whole plan, so copying it shares it.