| Web Analytics & Measurement | |
| Google Analytics Google platform measuring website traffic and visitor behavior | 60.9M sites |
| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 138.5M sites |
| Web Servers & Operating Systems | |
| Nginx High-performance web server and reverse proxy widely deployed | 160.7M sites |
| Ubuntu Popular Linux operating system used for servers | 18.8M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 45.1M sites |
| JavaScript Libraries & Widgets | |
| Modernizr JavaScript library detecting browser feature support | 7.6M sites |
| Popper JavaScript positioning engine for tooltips and popovers | 5.5M sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 117.3M sites |
| Fonts & Icons | |
| Font Awesome Popular icon library and toolkit for scalable web icons | 73M sites |
| other | |
| Sakai | 8 sites |
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