| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| Jetpack Automattic plugin adding security, performance, and site tools to WordPress | 2.7M sites |
| Twenty Thirteen Default WordPress theme from 2013. | 73.9K sites |
| Web Analytics & Measurement | |
| Cloudflare Browser Insights Cloudflare real-user monitoring capturing page performance metrics | 5.3M sites |
| Business Email & Productivity | |
| Proton Mail Encrypted email service focused on privacy | 474.4K sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 161.4M sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M 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 | |
| imagesLoaded JavaScript utility detecting when page images have finished loading | 11M 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 | |
| EWWW Image Optimizer WordPress plugin compressing and optimizing images | 559.6K sites |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 74.5M sites |
| Media, Maps & Social | |
| YouTube Video hosting platform whose players embed into web pages | 8M sites |
| SEO & Content Discovery | |
| 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 |
| Yandex Generic Yandex service or script detected on the site | 988.7K sites |
| other | |
| Spotify Web API REST API for Spotify catalog data and playback control | 14.2K sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Akismet Anti-spam: Spam Protection Social & Community | 4M sites |
| Wpcom | 2.2M sites |
| My Jetpack | 2.1M sites |
| Jetpack Boost – Website Speed, Performance and Critical CSS Performance & Speed | 2.1M sites |
| WP Super Cache Performance & Speed | 1M sites |
| WebSub (FKA. PubSubHubbub) Content & Media | 29.4K sites |
| ActivityPub Other | 5.9K sites |
| Fs Poster | 3.6K sites |
| Iawmlf | 1.1K sites |
| Nodeinfo2 | 922 sites |
| NodeInfo(2) Other | 922 sites |
| Webmention Other | 876 sites |
| Friends Content & Media | 848 sites |
| Enable Mastodon Apps Other | 507 sites |
| IndieAuth Security & Privacy | 403 sites |
| Micropub Other | 218 sites |
| Parse This | 138 sites |
| Post Kinds | 129 sites |
| IndieBlocks Design & Themes | 116 sites |
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