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

DMARCDMARC

DMARC Usage Statistics · Download List of All Websites using DMARC

A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse

Standard

SSL Certificates

QuoVadisQuoVadis

QuoVadis Usage Statistics · Download List of All Websites using QuoVadis

QuoVadis Trust/Link provides cost-effective identity management tools to securely identify users online, to protect privacy and data integrity with encryption, and to use legally binding digital signatures.

SSL by DefaultSSL by Default

SSL by Default Usage Statistics · Download List of All Websites using SSL by Default

The website redirects traffic to an HTTPS/SSL version by default.

Web Hosting Providers
Operating Systems and Servers
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.