| CMS & Website Builders | |
| Framer Sites Visual website builder publishing production sites | 334.4K sites |
| Web Analytics & Measurement | |
| Amplitude Product analytics platform tracking user behavior and engagement. | 50.9K sites |
| Google Analytics Google platform measuring website traffic and visitor behavior | 61.2M sites |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 65.9M sites |
| Advertising & Conversion Tracking | |
| Google Ads Google advertising platform for search and display campaigns | 7.4M sites |
| Google Ads Conversion Tracking Tag measuring conversions from Google advertising campaigns | 5.2M sites |
| Linkedin Insight Tag LinkedIn tag tracking ad conversions and building audiences | 4.4M sites |
| Reddit Ads Advertising and conversion tracking platform for Reddit campaigns | 36.7K sites |
| Marketing & Email Campaigns | |
| HubSpot Analytics Visitor tracking and reporting built into HubSpot's marketing tools | 129.2K sites |
| Sales & CRM | |
| HubSpot Marketing, CRM, and automation platform for businesses | 1.8M sites |
| Business Email & Productivity | |
| Google Workspace Google suite for business email, docs, and collaboration tools | 21.4M sites |
| Communications | |
| SendGrid Cloud email delivery service for transactional and marketing mail | 3.9M sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 188.1M sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 141.3M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 163.7M sites |
| Front-End Frameworks & UI Toolkits | |
| React JavaScript library for building component-based user interfaces | 31.6M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 78.8M sites |
| SEO & Content Discovery | |
| Google Generic Google service or script detected on the site | 34.3M sites |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 160.2M sites |
| Fonts & Icons | |
| Google Font API Google service delivering free web fonts to websites | 111.5M sites |
| Developer Tools | |
| Statuspage Hosted status page service communicating uptime and incident information. | 8.4K sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| OpenAI Developer of the GPT models, ChatGPT and the API behind them. Sites listed here have verified their domain with OpenAI | 251.6K sites |
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