| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 122.9M sites |
| Web Servers & Operating Systems | |
| Apache HTTP Server Long-established open-source web server software | 70.4M sites |
| Ubuntu Popular Linux operating system used for servers | 15.6M sites |
| Front-End Frameworks & UI Toolkits | |
| Bootstrap Popular CSS and component framework for responsive layouts | 37.9M sites |
| PWA Progressive web app technology enabling installable, offline-capable sites | 27.9M sites |
| other | |
| Mediaserve Mediaserve International B.V. | 3 sites |
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