How to Build a Competitive Intelligence Tool That Reveals Any Company's Tech Stack

If you're building a SaaS product, running a sales team, or doing market research, one of the most valuable signals you can get about a company is their technology stack. What CMS do they use? What analytics? What payment provider? What hosting? These aren't just technical details — they're business intelligence. A company running Shopify is a potential customer for Shopify apps A company using HubSpot has budget for marketing tools A company on AWS with React is likely a modern engineering org A company still on jQuery might be ready for a migration consulting pitch This post walks through building a competitive intelligence tool in Python that can scan any website and return its full tech stack in under 2 seconds. The Manual Way (Don't Do This) You could try to figure out a website's stack manually: Open DevTools, check the Network tab for server headers View source, search for framework-specific patterns Check DNS records with dig Look at the TLS certificate issuer This works for on