I Built a BuiltWith Alternative That Costs 30x Less

I wanted to analyze what technologies my competitors use — programmatically, across multiple domains. I started looking for an API. The first quote I got was $295/month — from BuiltWith. Wappalyzer wanted $250/month . A quick note: BuiltWith is a different product — it maintains a massive historical database of 68K+ technologies by crawling the web over years. If you need to know what a site used in 2019, BuiltWith is your only option. I needed real-time detection — visit a URL right now and analyze what's actually running. Different problem. I checked RapidAPI for real-time alternatives. The top result had a 1-star rating. Another one offered a free tier of 4 requests per month . Four. Per month. So I did what any developer would do. I built my own. Here's What a Real Scan Returns Before I explain how it works — here's a real scan of vercel.com: curl "https://stackxray-api.p.rapidapi.com/api/v1/detect?url=vercel.com" \ -H "X-RapidAPI-Key: YOUR_KEY" \ -H "X-RapidAPI-Host: stackxray-api