| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 56.5M sites |
| WordPress Themes & Plugins | |
| WordPress Block Editor Block-based content editor built into modern WordPress | 11.6M sites |
| Web Analytics & Measurement | |
| Google Tag Manager Tag management system deploying analytics and marketing tags without code | 52.2M sites |
| Piwik PRO Core Privacy-focused analytics and tag management platform | 625.6K sites |
| Advertising & Conversion Tracking | |
| Linkedin Insight Tag LinkedIn tag tracking ad conversions and building audiences | 4.2M sites |
| Marketing & Email Campaigns | |
| Leadfeeder Website visitor identification tool surfacing B2B sales leads from traffic. | 31.7K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 117.3M sites |
| Sucuri Website security service offering firewall and malware protection | 435K sites |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 12.9M sites |
| Privacy & Cookie Consent | |
| CookieYes Cookie consent and GDPR compliance banner solution | 2.4M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 138.6M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 89.1M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 58.4M sites |
| Performance & Optimization | |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 59.8M sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 122.9M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 53.2M sites |
| other | |
| Seavus-As | 96 sites |
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