| Ecommerce & Shopping Carts | |
| WooCommerce Open-source ecommerce plugin turning WordPress into an online store | 10.9M sites |
| Payments & Checkout | |
| PayPal Online payment platform for sending and accepting money | 4.5M sites |
| WooCommerce PayPal Payments WooCommerce extension accepting payments through PayPal | 270.8K sites |
| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 75.7M sites |
| WordPress Themes & Plugins | |
| Redux Framework Options framework used by WordPress themes and plugins | 1.7M sites |
| WordPress Block Editor Block-based content editor built into modern WordPress | 15.7M sites |
| Forms & Lead Capture | |
| Contact Form 7 Widely used WordPress plugin for building contact forms | 15.8M sites |
| Hosting & Cloud Providers | |
| Websupport-Sro-Sk-As Network operator identifier for Websupport hosting | 513.3K sites |
| Security & Bot Defense | |
| reCAPTCHA Google service distinguishing humans from bots to block spam | 16M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 149.4M sites |
| Nginx High-performance web server and reverse proxy widely deployed | 153.2M sites |
| OpenResty Nginx-based web platform bundling Lua scripting support | 28.2M 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 | |
| Modernizr JavaScript library detecting browser feature support | 7.5M sites |
| Popper JavaScript positioning engine for tooltips and popovers | 5.4M sites |
| Slick Responsive carousel and slider library for web pages | 9.9M sites |
| Slider Revolution Popular slider and visual content builder for WordPress sites | 6.6M sites |
| Underscore.js JavaScript utility library offering functional programming helpers | 6.3M 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 | |
| Instafeed.js JavaScript library embedding Instagram photo feeds. | 128.8K 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 |
| 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 |
| Redirection SEO | 2.6M sites |
| Wpforms | 2.2M sites |
| Regenerate Thumbnails Other | 806.8K sites |
| Wc Push Notifications | 708.8K sites |
| Paypal | 466.7K sites |
| Payments | 438.2K sites |
| MailPoet – Newsletters, Email Marketing, and Automation Marketing & Email | 293.7K sites |
| Woocommerce Email Editor | 239.4K sites |
| Eap Accordion | 33.3K sites |
| St | 920 sites |
| Sigma Search & Replace Productivity & Operations | 233 sites |
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