I built a small Stripe app that enriches customer data directly in the Stripe UI. If a customer signs up with a work email, the app looks up their company, industry, estimated size, etc. from a firmographic database and shows it in a sidebar when you view the customer.
It also gives you a breakdown chart of all your customers by industry. I'm working on a couple other facets and filters too.
No signup, API keys, or config - it just works inside Stripe and you can install it directly from the marketplace. Would love feedback if you end up trying it out: https://marketplace.stripe.com/apps/hybound-enrichment