| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| Divi Popular WordPress theme and visual page builder | 3.9M sites |
| Web Analytics & Measurement | |
| 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 |
| Advertising & Conversion Tracking | |
| Facebook Pixel Meta tracking pixel measuring ad conversions and building audiences | 10.1M sites |
| Customer Chat & Support | |
| Joinchat WordPress plugin connecting visitors to WhatsApp chat | 805.7K sites |
| WhatsApp Business Chat Widget letting visitors start WhatsApp conversations with businesses | 5.9M sites |
| Hosting & Cloud Providers | |
| Hetzner German provider of dedicated servers and cloud hosting | 6M sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 161.4M sites |
| Unpkg CDN serving packages published to the npm registry | 5.2M sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| FitVids.JS JavaScript utility making embedded videos responsive | 5M 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 |
| 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 |
| Media, Maps & Social | |
| GTranslate Website translation and localization widget. | 269K sites |
| Leaflet JavaScript library for building interactive maps | 1.1M sites |
| SEO & Content Discovery | |
| 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 |
| Yoast SEO WordPress plugin managing on-page SEO, sitemaps, and metadata | 21.4M sites |
| Fonts & Icons | |
| Google Font API Google service delivering free web fonts to websites | 105.7M sites |
| other | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Recras Booking and reservation software for leisure and activity businesses | 1.3K sites |
| Yoast | 9.2M sites |
| Site Kit by Google – Analytics, Search Console, AdSense, Speed Analytics | 3.9M sites |
| Divi | 1.8M sites |
| Code Snippets Design & Themes | 1.1M sites |
| Trustindex | 716.9K sites |
| Recras Productivity & Operations | 641 sites |
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