| Ecommerce & Shopping Carts | |
| WooCommerce Open-source ecommerce plugin turning WordPress into an online store | 8.5M sites |
| Payments & Checkout | |
| PayPal Online payment platform for sending and accepting money | 3.9M sites |
| WooCommerce PayPal Checkout Payment Gateway WooCommerce plugin adding PayPal checkout payments. | 46.5K sites |
| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 58.6M sites |
| Hosting & Cloud Providers | |
| Bluehost Popular shared and WordPress web hosting provider. | 9.9M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 72.1M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 93.5M sites |
| JavaScript Libraries & Widgets | |
| imagesLoaded JavaScript utility detecting when page images have finished loading | 8.4M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 93.8M sites |
| jQuery Migrate Compatibility shim restoring deprecated jQuery APIs for older code | 40.4M sites |
| Databases & Caching | |
| MySQL Popular open-source relational database used by many web applications | 60.6M sites |
| Performance & Optimization | |
| Endurance Page Cache Page caching system used on Endurance and Bluehost WordPress hosting. | 1.8M sites |
| Priority Hints Browser resource hints signaling fetch priority for faster loading | 65.2M sites |
| SEO & Content Discovery | |
| Open Graph Metadata protocol controlling how page links preview on social platforms | 133.1M sites |
| RSS Web feed format syndicating site content for readers and aggregators | 55.3M sites |
| Yoast SEO WordPress plugin managing on-page SEO, sitemaps, and metadata | 16.4M sites |
| Fonts & Icons | |
| Google Font API Google service delivering free web fonts to websites | 94.4M sites |
| other | |
| Auberge | 2K sites |
| Yoast | 13.7M sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 8.4M sites |
| Wc | 5.9M sites |
| Wccom Site | 5.8M sites |
| Wc Admin | 5.8M sites |
| Wc Analytics | 5.8M sites |
| Wc Telemetry | 5.6M sites |
| Wc Admin Email | 4.8M sites |
| Wpcom | 3.8M sites |
| My Jetpack | 3.8M sites |
| Jetpack Boost – Website Speed, Performance and Critical CSS Performance & Speed | 3.7M sites |
| Monsterinsights | 2.5M sites |
| Omapp | 1.4M sites |
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