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

Drupal is an open source content management system written in PHP, originally developed by Dries Buytaert.

Microsoft's Active Server Pages technology on the .NET framework.

PHP is a scripting language for creating websites.

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.

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

Popper is an open source JavaScript library for tooltips and popovers.

Google develops a range of web servers for their web infrastructure.

Cloudflare Server is a web server developed by Cloudflare.

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

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.

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

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.

Consensus (formerly J2 Global) is a US-based digital media and internet services company. This includes brands such as Vipre, Livedrive and others.

GlobalSign is an IT security service provider, also operating as SSL certificate authority.

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

Starfield Technologies is an SSL certificate authority owned by Go Daddy.

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.

Microsoft Clarity is a website visitor tracking tool.

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

HubSpot Marketing Analytics is a web analytics tool by HubSpot.

Heap is a web analytics tool.

Piano provides analytics and customer data management systems. This includes the former AT Internet brand.

Meta Pixel (formerly Facebook Pixel) is an analytics tool to track actions on websites.

Microsoft UET (Universal Event Tracking) records what visitors do on a website after they click on an ad.

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

Amazon Associates is the affiliate program of Amazon.

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

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.

Gzip (GNU zip) is a file compression algorithm.

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 its www subdomain, e.g. from example.com to www.example.com.

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/X 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.

HTML5 is the fifth revision of the HTML standard.

Transitional version of HTML.

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.

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

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

WebP is an image format that provides lossless and lossy compression, developed by Google.

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