FactorioArchitect

Finds perfect ratios to produce a given number of items.

Features

• Considers productivity/speed bonuses from beacons and modules.
• Allows you to set different bonuses depending on if it's an intermediate product or not.
• Computes optimal ratios for all three refining options.
• Pretty UI!

Todo List

• Have the option of different rates (per second, per minute, etc.)
• Consider energy as an ingredient for steam
• Marathon mode recipes
• Option to set and add recipes for individual items
• Option to set bonuses for individual items
• Recipes for different versions
• Possibly make inventory exactly like in-game
• Port to Linux/Mac

You can download the executable here.