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Slack

Slack Usage Statistics · Download List of All Websites using Slack

Messaging app for teams that makes working together simple and efficient.

Google Apps for Business

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

SPF

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.

Cloudflare DNS

Cloudflare DNS Usage Statistics · Download List of All Websites using Cloudflare DNS

DNS services provided by Cloudflare.

SwissCenter

SwissCenter Usage Statistics · Download List of All Websites using SwissCenter

SwissCenter offers hosting services for PHP, MySQL, dedicated servers in a datacenter in Switzerland.

Swiss hosting

Apache

Apache Usage Statistics · Download List of All Websites using Apache

Apache has been the most popular web server on the Internet since April 1996.

OpenSSL

OpenSSL Usage Statistics · Download List of All Websites using OpenSSL

The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

Unix

Unix Usage Statistics · Download List of All Websites using Unix

A *nix based operating system (undisclosed).

Google Webmaster

Google Webmaster Usage Statistics · Download List of All Websites using Google Webmaster

Webmaster tools provide you with a free and easy way to make your site more Google-friendly.