Technology lookup · 7,628 technologies
Every site has a recipe.
See the frameworks, hosting, payments and analytics behind any website. Type a domain, or get the extension and see it on every page.
- Hosting
- vercel
- Framework
- next.js 16
- Payments
- stripe.js
- CMS
- sanity
- CDN
- cloudflare
- Fonts
- geist
- Analytics
- posthog
- Errors
- sentry
01
Open any website
Browse as usual. The extension inspects each page locally as it loads.
02
Click the icon
The badge shows how many technologies were found. The popup lists them by category.
03
Go deeper with Pro
Versions, confidence and the evidence behind every match, plus export.
The extension
Runs where the page runs.
Detection happens in your browser, after JavaScript has loaded, so it sees what a crawler can't. Free, open source and private by design.
Free and Pro
The list is free. The details are Pro.
| Feature | Free | Pro |
|---|---|---|
| Technologies with name, icon and category | ● | ● |
| Versions, confidence and the evidence behind every match | — | ● |
| Hosting, ASN, CDN, DNS and mail providers, SPF/DMARC, TLS issuer | — | Soon |
| Tracking IDs: GA4, GTM, Meta Pixel, Hotjar, Segment, PostHog | — | Soon |
| Multi-page scan (up to 5 internal pages) | — | Soon |
| JavaScript rendering for single-page apps | — | Soon |
| Security header scorecard | — | Soon |
| Export as JSON or CSV | — | ● |
Wappalyzer alternative
Open source. Private. A fraction of the price.
| Feature | How Its Built | Wappalyzer |
|---|---|---|
| Price of the paid plan | $4.99/month | Plus $10/month; full plans from $250/month[1] |
| Open source | Yes — extension and detection engine (GPL-3.0) | Fingerprint repository no longer public since 2023[5] |
| What the extension sends | Nothing — detection runs in your browser | Per its privacy policy: if sharing is enabled, hostnames and detected technologies; data may be shared or sold[3] |
Questions
Where does the detection data come from?
From 7,628 open fingerprints maintained by the enthec/webappanalyzer community (GPL-3.0), plus our own signatures for newer tools. The extension is open source under the same license.
Does the extension send my browsing anywhere?
No. The free extension runs entirely in your browser and sends nothing to any server. Pro only sends the domain you choose to analyze, when you open the Pro view.
What does a lookup on this site store?
The domain and its detected stack, cached for 24 hours so repeat lookups are instant. No account, no cookies, no trackers.
How does the Pro trial work?
7 days free, then $4.99 per month. A card is required to start, and you can cancel any time before the trial ends.
Why does the extension sometimes find more than the website lookup?
The extension sees the page after JavaScript has run, including globals and the rendered DOM. A server-side lookup only sees the raw HTML and headers.