See what powers any website

Look up any domain's full technology stack, plus its traffic, authority, and Core Web Vitals.
Browse every site using a technology and track what changed over time. No account needed.

No paywall No account History back to Apr 2018

adobe.com What powers adobe.com? 276 technologies detected across 54 categories Adobe Client Data Layer JavaScript frameworks Apache HTTP Server Web servers Amazon Web Services PaaS Braintree Payment processors Adobe Analytics Analytics View full stack walmart.com What powers walmart.com? 233 technologies detected across 53 categories Akamai CDN Amazon Web Services PaaS Cart Functionality Ecommerce Apple Pay Payment processors AddShoppers Analytics View full stack samsung.com What powers samsung.com? 231 technologies detected across 51 categories Adobe Experience Manager CMS Apache HTTP Server Web servers Adobe DTM Tag managers Adobe Analytics Analytics Amazon Web Services PaaS View full stack

The lookups, lists, and history
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Everything in one place, free and uncapped. Look up a site, browse full technology lists, and follow every change over time.

Lookup

Enter any domain and see its full detected stack: CMS, frameworks, analytics, hosting, and more, with versions.

Technology lists

See every website using a technology, ordered by authority, with market share and trends. Full lists, uncapped.

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History

A timeline of what each site added and dropped, going back to 2018. Watch technologies rise and fall.

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The numbers behind every website

Each lookup pairs the technology stack with how the site ranks, performs, and earns its search traffic.

Open Page Rank Authority scores from the open web link graph, with each domain's exact rank.

Search traffic Estimated monthly visits from US Google search, and how many keywords rank in the top 30.

Top keywords The searches that bring a site its visitors, and the position each one holds.

Top backlinks The strongest links pointing at a site, one per source domain, with anchor text.

Core Web Vitals Real user LCP, INP, and CLS for single sites and across whole technologies.

Audience The countries a site's Chrome traffic comes from, and its phone, desktop, and tablet split.

Page facts Language, CDN, page weight, and structured data from the HTTP Archive crawl.

Subdomains Every host we track under a domain, and how many technologies each one runs.

See it all on one page: adobe.com

Who blocks AI crawlers

Our monthly crawl reads the robots.txt of 44.73 million domains and scores access for 33 AI crawlers.

6.04% block GPTBot 1.49 million domains 5.76% block ClaudeBot 1.42 million domains 14.65% name an AI crawler 3.61 million domains 16.17% publish llms.txt 4.71 million domains

See every AI crawler and who blocks it

How the web is hosted and secured

A monthly DNS sweep of 44.1 million domains records who hosts each site, who runs its DNS and email, and which certificate authority signs for it.

24.65% resolve to Cloudflare 7.04 million domains 63.46% use Let's Encrypt 15.47 million certificates 49.99% publish DMARC of 16.88 million mail domains 23.17% reachable over IPv6 6.62 million domains

See hosting, DNS, email and SSL providers by market share

45,231,840

Domains tracked

3,943

Technologies detected

4,161

In our catalog

2018

History since

Browse the most-⁠detected technologies

Counts come from the newest monthly dataset. Each card links to the full list of sites using that technology.

jQuery JavaScript libraries 30,423,181 sites Open Graph Miscellaneous 25,924,783 sites PHP Programming languages 23,772,097 sites Google Font API Font scripts 21,697,061 sites Google Analytics Analytics 21,253,786 sites Cloudflare CDN 19,035,415 sites HTTP/3 Miscellaneous 18,280,056 sites MySQL Databases 17,203,064 sites core-js JavaScript libraries 17,184,925 sites WordPress CMS 16,498,311 sites jQuery Migrate JavaScript libraries 14,710,918 sites Priority Hints Performance 14,544,053 sites RSS Miscellaneous 13,853,847 sites HSTS Security 13,172,145 sites Bootstrap UI frameworks 13,035,577 sites Nginx Web servers 11,727,679 sites

Compare technologies head to head

Usage by popularity tier, and the sites that switched from one technology to the other.

core-js vs jQuery Font Awesome vs Google Font API Apache HTTP Server vs Nginx Facebook Pixel vs Google Analytics HSTS vs reCAPTCHA cdnjs vs Cloudflare GSAP vs React Google Workspace vs Microsoft 365