In the April 2025 survey we received responses from 1,218,287,328 sites across 277,498,967 domains and 13,441,067 web-facing computers. This reflects an increase of 20.6 million sites, 1.9 million domains, and 38,345 web-facing computers.
nginx experienced the largest gain of 8.0 million sites (+3.25%) this month, and now accounts for 20.8% (+0.31pp) of sites seen by the Web Server Survey. Cloudflare made the next largest gain of 3.8 million sites (+2.49%).
OpenResty experienced the largest loss of 27.1 million sites this month, reducing its market share to 6.97% (-2.38pp). Apache suffered the next largest loss, down by 4.0 million sites (-2.07%).
Vendor news
- nginx 1.27.5 was released on April 16th, adding support for CUBIC congestion control to its QUIC implementation. QUIC is the underlying transport protocol used by HTTP/3.
- njs 0.8.10 was released on April 8th, adding support for a variety of modules when the QuickJS engine is used rather than the built-in JavaScript engine.
- lighttpd 1.4.79 was released on April 4th, with changes including a hardened systemd service and and fixing a bug where an incorrect SSL certificate could be chosen in mixed RSA and ECDSA environments.
- OpenResty 1.27.1.2 was released on April 3rd, containing a mixture of features and bug fixes, including a backported fix for CVE-2025-23419.
- Apache Tomcat versions 9.0.104, 10.1.40 and 11.0.6 were released on April 8th and 9th.
- Microsoft announced that hotpatching in Windows Server 2025 will be made generally available on July 1st. Hotpatching allows updates to be installed without a reboot.
- Amazon announced that it will add a new availability zone in us-east-1 in 2026, bringing
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