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.
Google Apps for Business Usage Statistics · Download List of All Websites using Google Apps for Business
Web-based email, calendar, and documents for teams. Renamed to Google Apps for Work, but now known as G Suite from Google Cloud.
Business Email Hosting
Apache Usage Statistics · Download List of All Websites using Apache
Apache has been the most popular web server on the Internet since April 1996.
Apache 2.0 Usage Statistics · Download List of All Websites using Apache 2.0
Apache version 2.0.*
Red Hat Enterprise Linux Usage Statistics · Download List of All Websites using Red Hat Enterprise Linux
Red Hat Enterprise Linux (often abbreviated to RHEL) is a Linux distribution produced by Red Hat and targeted toward the commercial market, including mainframes.
Robots Disallow Usage Statistics · Download List of All Websites using Robots Disallow
A robots disallow all directive with no other options.
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