it is a addon for nei which allows you to see the basic materials required for a certain item and here is a screenshot for what happens when you connect to the project ozone 2 server with it (it was kind of hard to get the screenshot because something weird happened then i got timed out then the server restarted)
All mods are blacklisted until an admin whitelists them Please wait for an admin to review CraftingCosts - Addons - Minecraft Mods - Curse