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

Web Servers

ZeusZeus

Zeus Usage Statistics · Download List of All Websites using Zeus

Zeus Web Server is the most scalable, high-performance web server software available, underpinning business-critical solutions for the world's leading web sites.