Reverse Engineer Any SaaS Company's Tech Stack in 10 Seconds

Ever wonder what tech stack your competitors are running? Whether it's their frontend framework, CDN provider, analytics platform, or CMS — you can detect all of it programmatically in seconds. In this tutorial, I'll show you how to build a Python script that reverse-engineers the technology stack of any SaaS company's website. We'll detect 141+ technologies including frameworks, CMS platforms, hosting providers, CDNs, and analytics tools. Why Reverse-Engineer Tech Stacks? There are solid reasons to detect what technologies a website is running: Competitive analysis — understand what tools your competitors rely on Sales prospecting — qualify leads based on the technologies they use (e.g., find companies running Shopify or WordPress) Market research — track technology adoption trends across an industry Due diligence — evaluate a company's technical maturity before investing or partnering Doing this manually with browser extensions is slow and doesn't scale. Let's automate it. Setup We'l