| 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 |
| SiteOrigin Widgets Bundle WordPress plugin providing a collection of page widgets | 232.8K sites |
| Advertising & Conversion Tracking | |
| Facebook Pixel Meta tracking pixel measuring ad conversions and building audiences | 10.1M sites |
| Hosting & Cloud Providers | |
| A2 Hosting Web hosting provider emphasizing speed | 358.5K sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 131.7M sites |
| hCaptcha CAPTCHA service blocking bots while preserving privacy | 1M sites |
| Web Servers & Operating Systems | |
| 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 |
| 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 |
| MetaSlider WordPress plugin creating responsive image sliders | 669.3K sites |
| TinyMCE JavaScript rich text WYSIWYG editor for the web | 447.2K sites |
| WOW JavaScript library revealing CSS animations on scroll | 5.3M sites |
| bxSlider Responsive jQuery content slider and carousel library | 1.6M 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 |
| parallax.js JavaScript library creating parallax scrolling background effects | 5.9M 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 | |
| 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 |
| Yoast | 9.2M sites |
| Jetpack – WP Security, Backup, Speed, & Growth Security & Privacy | 5.1M sites |
| Akismet Anti-spam: Spam Protection Social & Community | 4M sites |
| Wpforms | 2.2M sites |
| Wpcom | 2.2M sites |
| My Jetpack | 2.1M sites |
| Jetpack Boost – Website Speed, Performance and Critical CSS Performance & Speed | 2.1M sites |
| Metaslider | 362.4K sites |
| Sowb | 297.7K sites |
| Page Builder by SiteOrigin Design & Themes | 116K sites |
| Acme Fix Images – Regenerate Thumbnails Other | 1.6K sites |
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