Frameworks
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

Parallels Plesk PanelParallels Plesk Panel

Parallels Plesk Panel Usage Statistics · Download List of All Websites using Parallels Plesk Panel

Host and manage websites and servers at any scale, includes virtualization software.