Stack Detector

Have you ever wondered how a website was built? I find myself constantly asking this question. I see a clean design or smooth interaction and think: "Could I build something like this myself?" Then I'm digging through page source, checking network tabs, trying to figure out what they're using under the hood.

The manual detective work got old fast. So I built this little utility to scratch my own itch.

What it does

Stack Detector analyzes any website URL and identifies the frameworks, libraries, analytics tools, and hosting setup. It looks at DOM patterns, HTTP headers, and loaded scripts to build a picture of what's powering the site.

Perfect for when you're doing competitive research, looking for inspiration, or just satisfying your curiosity about how something works.

What I discovered building it

Most websites leave surprisingly clear fingerprints. React apps have telltale meta tags and global variables. Next.js has specific bundle signatures. Analytics tools practically announce themselves in network requests.

The biggest surprise? Many simple-looking sites use way more tools than you'd expect. That minimal landing page might be running four different analytics platforms and two A/B testing tools.

How to use it

Just paste a URL into the tool above and hit analyze. You'll get a breakdown of detected frameworks, hosting providers, and third-party tools. Use it to:

• Research competitors and see what tools successful sites actually use
• Find new libraries and services you haven't tried yet
• Validate your own tech choices against similar sites

Fair warning

The detection isn't perfect. Some tools hide their signatures, and heavily customized setups might not match the patterns. Think of it as a starting point for your research, not the complete picture.

Ready to analyze? Head over to the App to start detecting tech stacks, or explore the Chat to dive deeper into web technologies. If you prefer to digest this content with your own agent, you can also grab the llms.txt directly!