| CMS & Website Builders | |
| WordPress Open-source CMS powering websites, blogs, and content management | 58.6M sites |
| Security & Bot Defense | |
| hCaptcha CAPTCHA service blocking bots while preserving privacy | 981.1K sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 146.9M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 93.5M sites |
| Front-End Frameworks & UI Toolkits | |
| UIKit Lightweight modular front-end framework for web interfaces | 1.1M sites |
| JavaScript Libraries & Widgets | |
| 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 |
| SEO & Content Discovery | |
| RSS Web feed format syndicating site content for readers and aggregators | 55.3M sites |
| Contact Form 7 Forms & Popups | 10.4M sites |
| Wp Rocket | 2.3M sites |
| Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress Marketing & Email | 46K sites |
| Icegram Express | 38.3K sites |
| Yootheme | 14.3K sites |
| Widewalk – Accessibility Toolbar Design & Themes | 152 sites |
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