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WordPress is an open source blog publishing and content management system, based on PHP and MySQL.

Hugo is an open source static website generator written in Go.

Docusaurus is an open source static website generator based on Node.js.

Atlassian Statuspage is a hosted service for showing the status of services.

PHP is a scripting language for creating websites.

Static websites don't use any server-side programming language for generating web pages, but deliver fixed content which is created manually or with an offline tool.

Python is a general-purpose scripting language.

JavaScript is a lightweight, object-oriented, cross-platform scripting language, often used within web pages.

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

Bootstrap is an open source HTML, CSS, and JavaScript framework.

Underscore is a JavaScript library that provides functional programming support.

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the visitors browser.

Polyfill.io provides tailored code that implements features on web browsers without native support.

Bootstrap is an open source HTML, CSS, and JavaScript framework.

The Apache HTTP Server is an open source web server by the Apache Software Foundation.

Nginx (pronounced as "engine X") is a lightweight open source web server developed by Igor Sysoev.

Cloudflare Server is a web server developed by Cloudflare.

Gunicorn 'Green Unicorn' is a Python HTTP server ported from Ruby's Unicorn project.

Debian is a Linux distribution.

Unix is a range of operating systems originally developed at Bell Labs. This includes Unix and Unix-like systems, such as Linux.

Amazon is a US-based e-commerce and cloud computing provider.

Hetzner is a German web hosting provider.

Automattic is hosting WordPress-based websites.

Atlassian offers a range of IT products and services.

Read the Docs provides a platform for creating and hosting technical documentation.

PhoenixNAP is a US-based IT service provider offering web hosting.

Amazon is a US-based e-commerce and cloud computing provider.

Hetzner is a German web hosting provider.

Automattic is hosting WordPress-based websites.

PhoenixNAP is a US-based IT service provider offering web hosting.

Fastly is a content delivery network.

Cloudflare provides a content delivery network.

Amazon CloudFront is a content delivery web service by Amazon.

Amazon is a US-based e-commerce and cloud computing provider.

Cloudflare provides DNS servers and other web services.

Amazon is a US-based e-commerce and cloud computing provider.

Hetzner is a German provider of internet services.

Gmail is the email service provided by Google.

IdenTrust is a SSL certificate authority.

Let’s Encrypt is a free, automated, and open certificate authority provided by the Internet Security Research Group.

DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.

The CDNJS is a content distribution network, hosting a large number of JavaScript libraries, provided by CloudFlare.

Google Hosted Libraries (formerly called Google Libraries API) is a content distribution network for the most popular, open-source JavaScript libraries, provided by Google.

Matomo (formerly Piwik) is an open source web analytics program.

Google Analytics is a free service to get detailed statistics about the visitors of a website, provided by Google. This includes the Ads conversion tracking and the Floodlight services.

WordPress Jetpack Stats is a visitor tracking plugin for the WordPress publishing platform.

The Google Advertising network consists of AdSense, DoubleClick and other services.

The Google Tag Manager is a Google service to support webmasters to manage tags on their websites.

A Twitter Button allows a Twitter user to post a tweet from the visited site.

External Cascading Style Sheets define style rules in a separate CSS file.

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Session cookies are temporary cookies, which are deleted when the user closes the browser.

HttpOnly cookies are used only in the HTTP protocol and not in client side scripts, which may increase security.

Non-secure cookies may be used via an unencrypted connections, which may be a security threat.

Gzip (GNU zip) is a file compression algorithm.

Brotli is a lossless compression algorithm developed by Google.

A strong ETag is an HTTP header field for validation of cached web pages, that indicates a byte-for-byte identical page in the cache.

A weak ETag is an HTTP header field for validation of cached web pages, that indicates a semantically equivalent page in the cache.

The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.

HTTP/2 is the second major version of the HTTP network protocol.

HTTP/3 is the third major version of the HTTP network protocol, derived from the QUIC protocol.

HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.

Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.

JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding Linked Data using JSON.

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Microdata is a specification to integrate metadata within existing content on web pages.

HTML5 is the fifth revision of the HTML standard.

Transitional version of HTML.

Strict version of XHTML.

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

Scalable Vector Graphics (SVG) is an XML-based vector image format.

GIF (Graphics Interchange Format) is a lossless compression image format, originally introduced by CompuServe and suitable to store graphics, logos and simple animations.

Organizations