Selling on Shopify plus Amazon or Walmart changes what you need from an analytics tool. Northbeam does one thing well: attributing paid media clicks to conversions on DTC storefronts. But once your revenue splits across marketplaces, that single-channel focus turns into a gap you're patching with spreadsheets. If you're hunting for the best Northbeam alternative for omnichannel brands, the real question isn't "which tool has better attribution models." It's whether the tool can see your whole business at once.