Usage Distribution in the Top 1 Million Sites

Distribution for websites using technologies

Technology	Websites	%
Ubuntu	92,423	9.24
OpenSSL	42,783	4.28
Envoy	34,622	3.46
QUIC	32,503	3.25
Parallels Plesk Panel	30,047	3
Debian	25,917	2.59
CentOS	24,580	2.46
Unix	10,271	1.03
GitHub Hosting	7,694	0.77
mod_pagespeed	5,472	0.55
Red Hat Enterprise Linux	5,470	0.55
mod_ssl	3,094	0.31
mod_perl	2,855	0.29
AlmaLinux	2,278	0.23
FreeBSD	1,925	0.19
Apache Tomcat JK	1,886	0.19
Win32 Header	1,764	0.18
Fedora	1,313	0.13
Limiter Modules	1,083	0.11
Suhosin	572	0.06
Squid	429	0.04
Gentoo Linux	358	0.04
Alternate Protocol	148	0.01
Hiawatha	70	0.01
Auth Passthrough	70	0.01
GZIP Module	69	0.01
HHVM	48	0
Joyent JWS	22	0
Go Server	14	0
Cisco/Arrowpoint Content Service Switch	11	0
PowerPC	8	0
OpenGSE	2	0