| Payments & Checkout | |
| Stripe Payment processing platform for online businesses | 1.5M sites |
| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| Web Analytics & Measurement | |
| Cloudflare Browser Insights Cloudflare real-user monitoring capturing page performance metrics | 5.3M sites |
| Google Analytics Google platform measuring website traffic and visitor behavior | 59.7M sites |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 63.8M sites |
| MonsterInsights WordPress plugin connecting sites to Google Analytics | 1.5M sites |
| Advertising & Conversion Tracking | |
| Facebook Pixel Meta tracking pixel measuring ad conversions and building audiences | 10.1M sites |
| Google Ads Google advertising platform for search and display campaigns | 7.2M sites |
| Email & Push Marketing | |
| Mailchimp Email marketing platform for campaigns and audience management | 4.2M sites |
| Forms & Lead Capture | |
| Mailcheck JavaScript utility suggesting corrections for mistyped email addresses | 1.2M sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 161.4M sites |
| Security & Bot Defense | |
| Google Sign-in Google identity service enabling sign-in with a Google account | 1.4M sites |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 16M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 149.4M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| Slider Revolution Popular slider and visual content builder for WordPress sites | 6.6M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 114.7M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 53M sites |
| punycode JavaScript utility encoding internationalized domain names | 1.3M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 77.9M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 74.5M sites |
| SEO & Content Discovery | |
| All in One SEO WordPress plugin managing SEO settings, sitemaps, and metadata | 4.7M sites |
| Google Generic Google service or script detected on the site | 32.3M sites |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 151.8M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Site Kit Official WordPress plugin connecting Google search and analytics tools | 10.4M sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Site Kit by Google – Analytics, Search Console, AdSense, Speed Analytics | 3.9M sites |
| Wpforms | 2.2M sites |
| Aioseo | 1.5M sites |
| Two Factor Security & Privacy | 644.8K sites |
| Cdh | 14 sites |
| Wpia | 8 sites |
| SSL Domain Checker Other | 6 sites |
| Xmla | 5 sites |
| Xmla Kb | 4 sites |
| Network Status | 4 sites |
| Email Diagnostics | 4 sites |
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