Analytics and Tracking

PmetricsPmetrics

Pmetrics Usage Statistics · Download List of All Websites using Pmetrics

pMetrics plugin allows you to check blog stats directly from your WordPress Dashboard.

Audience Measurement

ClickyClicky

Clicky Usage Statistics · Download List of All Websites using Clicky

Clicky web analytics system, previously known as GetClicky

Audience Measurement

FastlyFastly

Fastly Usage Statistics · Download List of All Websites using Fastly

Real-time Analytics and CDN platform. Analyze your web and server traffic patterns in real-time.

Application Performance

Facebook Domain InsightsFacebook Domain Insights

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

This website contains tracking information that allows admins to see Facebook Insights out of Facebook to this domain.

Social Management

CrUX DatasetCrUX Dataset

CrUX Dataset Usage Statistics · Download List of All Websites using CrUX Dataset

CrUX is a data collection system that gathers information about how real users interact with websites. This website is included in the user experiences data gathered from Google Chrome and thus considered sufficiently popular on the Internet.

CrUX Top 10mCrUX Top 10m

CrUX Top 10m Usage Statistics · Download List of All Websites using CrUX Top 10m

Relative measure of site popularity within the CrUX dataset, measured by the total number of navigations on the origin. This site is in the top 10 million.

Viewport MetaViewport Meta

Viewport Meta Usage Statistics · Download List of All Websites using Viewport Meta

This page uses the viewport meta tag which means the content may be optimized for mobile content.

Content Delivery Network

CDN JSCDN JS

CDN JS Usage Statistics · Download List of All Websites using CDN JS

CloudFlare's CDN with popular javascript frameworks available.

Leaflet JSLeaflet JS

Leaflet JS Usage Statistics · Download List of All Websites using Leaflet JS

LeafletJS is an an open-source JavaScript library for mobile-friendly interactive maps.

Content Management System

JekyllJekyll

Jekyll Usage Statistics · Download List of All Websites using Jekyll

Transform your plain text into static websites and blogs. Note not all sites keep the Jekyll tags so this list will not be conclusive for all Jekyll sites.

Open Source

JavaScript Libraries and Functions

RespondRespond

Respond Usage Statistics · Download List of All Websites using Respond

A fast & lightweight polyfill for min/max-width CSS3 Media Queries (for IE 6-8, and more)

Compatibility

jQueryjQuery

jQuery Usage Statistics · Download List of All Websites using jQuery

JQuery is a fast, concise, JavaScript Library that simplifies how you traverse HTML documents, handle events, perform animations, and add Ajax interactions to your web pages. jQuery is designed to change the way that you write JavaScript.

JavaScript Library

Verified Link

TwitterTwitter

Twitter Usage Statistics · Download List of All Websites using Twitter

The website mentions twitter.com in some form.

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.

SSL Certificates

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.

HSTSHSTS

HSTS Usage Statistics · Download List of All Websites using HSTS

Forces browsers to only communicate with the site using HTTPS.

Name Server

DNSSECDNSSEC

DNSSEC Usage Statistics · Download List of All Websites using DNSSEC

DNSSEC strengthens DNS authentication by using digital signatures based on public key cryptography.

Operating Systems and Servers
Web Servers

VarnishVarnish

Varnish Usage Statistics · Download List of All Websites using Varnish

Varnish is a web accelerator / reverse proxy caching server.

Varnish Server

Syndication Techniques

AtomAtom

Atom Usage Statistics · Download List of All Websites using Atom

Atom Syndication Format is an XML language used for web feeds very similar to RSS.