Frameworks
Content Delivery Network

AJAX Libraries APIAJAX Libraries API

AJAX Libraries API Usage Statistics · Download List of All Websites using AJAX Libraries API

The AJAX Libraries API is a content distribution network and loading architecture for the most popular, open source JavaScript libraries.

Content Management System

WordPressWordPress

WordPress Usage Statistics · Download List of All Websites using WordPress

WordPress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability.

Open Source · Blog

JavaScript Libraries and Functions

Google Hosted LibrariesGoogle Hosted Libraries

Google Hosted Libraries Usage Statistics · Download List of All Websites using Google Hosted Libraries

Google Hosted Libraries is a globally available content distribution network for the most popular, open-source JavaScript libraries.

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.

Google Apps for BusinessGoogle 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

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.

Operating Systems and Servers
Syndication Techniques

RSSRSS

RSS Usage Statistics · Download List of All Websites using RSS

A family of web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts.

Pingback SupportPingback Support

Pingback Support Usage Statistics · Download List of All Websites using Pingback Support

A Pingback is one of three types of Linkbacks, methods for Web authors to request notification when somebody links to one of their documents.