Frameworks

Facebook Domain VerificationFacebook Domain Verification

Facebook Domain Verification Usage Statistics · Download List of All Websites using Facebook Domain Verification

Domain Verification provides a way for you to claim ownership of your domain in Facebook Business Manager.

Content Management System
Email Hosting Providers

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

DMARC

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.

Operating Systems and Servers