Frameworks

PHPPHP

PHP Usage Statistics · Download List of All Websites using PHP

PHP is a widely used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.

Web Servers

ApacheApache

Apache Usage Statistics · Download List of All Websites using Apache

Apache has been the most popular web server on the Internet since April 1996.

Operating Systems and Servers

Red Hat Enterprise LinuxRed Hat Enterprise Linux

Red Hat Enterprise Linux Usage Statistics · Download List of All Websites using Red Hat Enterprise Linux

Red Hat Enterprise Linux (often abbreviated to RHEL) is a Linux distribution produced by Red Hat and targeted toward the commercial market, including mainframes.

OpenSSLOpenSSL

OpenSSL Usage Statistics · Download List of All Websites using OpenSSL

The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.