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Moodle is a web-based open source course management system based on PHP.

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

WPBakery is a WordPress-based web page builder.

XenForo is a commercial forum package based on PHP and MySQL.

Ladipage is a Vietnamese hosted landing page generator.

Live Composer Page Builder is a WordPress-based website builder.

PHP is a scripting language for creating websites.

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

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

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

Handlebars is a JavaScript template engine largely compatible with Mustache.

MathJax is a JavaScript engine for displaying mathematical formulas.

KaTeX is a JavaScript library for math typesetting.

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

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

Viettel Group is a Vietnamese telecommunication network operator.

Ladipage is a Vietnamese hosted landing page generator.

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

Viettel Group is a Vietnamese telecommunication network operator.

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

PA Vietnam is a Vietnamese provider of internet services. This includes its subsidiary SuperData.

Gmail is the email service provided by Google.

Sectigo (formerly Comodo CA) is a US-based SSL certificate authority.

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

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

jsDelivr is a service for hosting JavaScript files.

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.

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

Hotjar is a website analytics and feedback application.

TikTok Pixel allows to track website events with TikTok.

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.

The WhatsApp share button allows users to share content with their WhatsApp contacts.

Facebook Social Plugins provide a way for Facebook users to share web pages with their friends.

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

The Pinterest Pin-It button allows website visitors to pin images onto Pinterest.

AddToAny is a social bookmarking and sharing service.

Reddit Buttons allow web pages to be submitted to and discussed on Reddit.

Tumblr buttons make it easy for Tumblr bloggers to share content on their blogs.

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.

Persistent cookies with an expiration time between 1 and 10 years.

Non-HttpOnly cookies are used in the HTTP protocol and also in client side scripts, which may be a security threat.

Secure cookies are used only via an encrypted connections, 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.

HTTP/2 is the second major version of the HTTP network 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/X Cards enable automatic attachment of photos, videos and media elements to tweets.

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

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

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

The Dublin Core Schema is a set of vocabulary terms that can be used to describe web resources and physical resources.

HTML5 is the fifth revision of the HTML standard.

Transitional 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.

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.

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

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