Email Hosting Providers

SPFSPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

Standard

Sender IDSender ID

Sender ID Usage Statistics · Download List of All Websites using Sender ID

Sender ID is an anti-spoofing email framework heavily based on SPF.

Standard

Web Servers

nginxnginx

nginx Usage Statistics · Download List of All Websites using nginx

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

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.

mod_pagespeedmod_pagespeed

mod_pagespeed Usage Statistics · Download List of All Websites using mod_pagespeed

mod_pagespeed is an open-source Apache module that automatically optimizes web pages and resources on them.