| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| SiteOrigin Page Builder WordPress plugin building page layouts with widgets | 449.1K sites |
| Web Analytics & Measurement | |
| Google Analytics Google platform measuring website traffic and visitor behavior | 59.7M sites |
| CDN & Edge Delivery | |
| Cloudflare Global CDN and edge platform delivering and protecting websites | 161.4M sites |
| cdnjs Free public CDN hosting popular open-source JavaScript libraries | 18.2M sites |
| Security & Bot Defense | |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 16M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 79.2M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 43.5M sites |
| JavaScript Libraries & Widgets | |
| Backbone.js JavaScript framework structuring apps with models and views | 742.2K sites |
| Clipboard.js Lightweight JavaScript library for copying text to clipboard | 1.2M sites |
| Modernizr JavaScript library detecting browser feature support | 7.5M sites |
| Moment.js JavaScript library for parsing and formatting dates | 2.7M sites |
| Moxie JavaScript runtime library powering cross-browser file uploads | 236.6K sites |
| Plupload JavaScript library handling multi-file uploads across browsers | 231.3K sites |
| Select2 JavaScript library enhancing select boxes with search and tags | 1.8M sites |
| Underscore.js JavaScript utility library offering functional programming helpers | 6.3M sites |
| 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 |
| prettyPhoto jQuery lightbox library for images, video, and content | 2.3M 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 |
| Media, Maps & Social | |
| AddToAny Social sharing buttons widget for websites | 744.5K sites |
| AddToAny Share Buttons WordPress plugin adding social sharing buttons | 494.6K sites |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 71.1M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 71.2M sites |
| Google Font API Google service delivering free web fonts to websites | 105.7M sites |
| other | |
| Kvcnet-2009 Hosting and network operator | 2.9K sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M sites |
| Hub Connector | 1.2M sites |
| WP Super Cache Performance & Speed | 1M sites |
| Wpmudev_pcs | 878.7K sites |
| Forminator Forms – Contact Form, Payment Form & Custom Form Builder Forms & Popups | 464.4K sites |
| Sowb | 297.7K sites |
| Wptap Click To Call | 8 sites |
| Popups – WordPress Popup Forms & Popups | 5 sites |
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