| 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 |
| Marketing & Email Campaigns | |
| MailChimp for WordPress WordPress plugin connecting forms to Mailchimp lists | 688.9K sites |
| Hosting & Cloud Providers | |
| Krystal UK web hosting provider | 181.2K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| Privacy & Cookie Consent | |
| CookieYes Cookie consent and GDPR compliance banner solution | 3.1M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 149.4M sites |
| LiteSpeed High-performance web server known for speed and caching | 39.6M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 114.2M sites |
| JavaScript Libraries & Widgets | |
| FlexSlider Responsive jQuery slider and carousel library | 519.3K sites |
| Infinite Scroll JavaScript library loading page content automatically while scrolling | 964.2K sites |
| Lightbox JavaScript script displaying images in an overlay popup | 7.6M sites |
| MetaSlider WordPress plugin creating responsive image sliders | 669.3K sites |
| Modernizr JavaScript library detecting browser feature support | 7.5M sites |
| Moment.js JavaScript library for parsing and formatting dates | 2.7M 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 |
| 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 |
| Media, Maps & Social | |
| Google Maps Embeddable interactive maps and location services from Google | 12M sites |
| Instagram Feed for WordPress WordPress plugin embedding Instagram feeds on a site | 1.9M sites |
| Responsive Lightbox & Gallery WordPress plugin displaying image galleries in lightbox popups | 242.9K sites |
| Smash Balloon Instagram Feed WordPress plugin displaying customizable Instagram feeds | 1.7M sites |
| SEO & Content Discovery | |
| 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 |
| Yoast SEO WordPress plugin managing on-page SEO, sitemaps, and metadata | 21.4M 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 |
| MailChimp | |
| Yoast | 9.2M sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Wordfence Security – Firewall, Malware Scan, and Login Security Security & Privacy | 4M 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 |
| Wordfence Login Security Security & Privacy | 2.4M sites |
| Cky | 1.1M sites |
| Mc4wp | 1M sites |
| Regenerate Thumbnails Other | 806.8K sites |
| Metaslider | 362.4K sites |
| Yith | 177K sites |
| Adtribes | 52K sites |
| Awcdp | 4.4K sites |
| Collapsing Categories Content & Media | 1.4K sites |
| Gmwqp | 869 sites |
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