nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Varnish is a web accelerator / reverse proxy caching server.
MediaWiki is a free software wiki package originally written for Wikipedia. It is now used by several other projects of the non-profit Wikimedia Foundation and by many other wikis, including The website.
This page contains an icon for iPhone, iPad and iTouch devices.
Really Simple Discovery is a way to help client software find the services needed to read, edit, or "work with" weblogging software.
The DOCTYPE is a required preamble for HTML5 websites.
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML
The OpenSearch description document format can be used to describe a search engine so that it can be used by search client applications.
Public specification of a preferred URL for a page allows search engines to understand the original location for content.
Page contains links to disable or enable DNS prefetching of links in the page.
The website uses conditional comments that are supported by Microsoft Internet Explorer. They allow web developers to show or hide HTML code based on the version of the viewer's browser.
Adapting images for high-resolution and low-resolution displays.
Contains language specific links.
Used to disable MIME-sniffing for a particular HTTP response.
The HTTP Strict-Transport-Security (HSTS) header instructs the browser to only use https.
Forces browsers to only communicate with the site using HTTPS.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
Last updated 15th February.
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