| Ecommerce & Shopping Carts | |
| WooCommerce Open-source ecommerce plugin turning WordPress into an online store | 10.9M sites |
| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| wpBakery Drag-and-drop page builder plugin for WordPress | 4.3M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 15.8M sites |
| Hosting & Cloud Providers | |
| OVH European hosting and cloud infrastructure provider | 6.6M sites |
| Plesk Web hosting control panel for managing servers and sites | 6.6M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 153.2M 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 | |
| Animate.css CSS library providing ready-made animation effects | 7.6M sites |
| Modernizr JavaScript library detecting browser feature support | 7.5M sites |
| 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 |
| prettyPhoto jQuery lightbox library for images, video, and content | 2.3M sites |
| waitForImages jQuery plugin firing callbacks after images finish loading | 511.9K 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 | |
| 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 | |
| ACME/Let's Encrypt Free TLS certificates issued automatically over the ACME protocol | 11.7M sites |
| Contact Form 7 Forms & Popups | 7.3M sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Wc | 3.7M sites |
| Wccom Site | 3.7M sites |
| Wc Admin | 3.7M sites |
| Wc Analytics | 3.7M sites |
| Wc Telemetry | 3.5M sites |
| Wc Admin Email | 3M sites |
| Sliderrevolution | 1.1M sites |
| Qode Api | 121.6K sites |
| Qi Blocks Design & Themes | 40.4K sites |
| SellKit – Funnel builder and checkout optimizer for WooCommerce to sell more, faster Other | 93 sites |
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