| Security & Bot Defense | |
| HSTS HTTP header forcing browsers to use secure HTTPS connections | 122.9M sites |
| Web Servers & Operating Systems | |
| HTTP/3 Modern web transport protocol over QUIC for faster connections | 147.9M sites |
| Nginx High-performance web server and reverse proxy widely deployed | 141.9M sites |
| other | |
| Risson | 72 sites |
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