| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 82.9M sites |
| FreeBSD Open-source Unix-like operating system. | 88.5K sites |
| OpenSSL Cryptography toolkit implementing TLS and SSL protocols | 2.1M sites |
| Languages & Back-End Frameworks | |
| PHP Server-side scripting language powering a large share of websites | 118.1M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 45.6M sites |
| JavaScript Libraries & Widgets | |
| MooTools Compact JavaScript framework for object-oriented development | 561.2K sites |
| jQuery Widely used JavaScript library simplifying DOM manipulation, events, and AJAX | 118.1M sites |
| SEO & Content Discovery | |
| Google Generic Google service or script detected on the site | 34.3M sites |
| other | |
| Snu | 13 sites |
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