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Site Info - Kernel.org

Overview of web technologies used by Kernel.org.

Website Background

The Linux Kernel Archives

Description on Homepage

Top 10k among all websites

Popularity rank

MediaWiki is an open source wiki-style content management system written in PHP, originally developed for Wikipedia by Lee Daniel Crocker.

MediaWiki
used on a subdomain

Docutils is a Python-based open-source text processing system for generating documentation in HTML and other formats.

Docutils 0.19
2% of sites use a newer version
used on a subdomain

Sphinx is a Python-based tool for creating project documentation, based on Docutils.

Sphinx
used on a subdomain

DokuWiki is an open source wiki-style content management system written in PHP and using plain text files for storage, originally developed by Andreas Gohr.

DokuWiki
used until recently

PHP is a scripting language for creating websites.

PHP
used on a subdomain

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.

static files
used on a subdomain

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

JavaScript
used on inner pages

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

jQuery
used on a subdomain

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

Bootstrap
used on a subdomain

Underscore is a JavaScript library that provides functional programming support.

Underscore
used on a subdomain

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

Bootstrap
used on a subdomain

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

Nginx

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

Apache 2.4.6
65% of sites use a newer version
used on a subdomain

Cloudflare Server is a web server developed by Cloudflare.

Cloudflare Server
used on a subdomain

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

Unix
used on a subdomain

CentOS is a Linux distribution based on Red Hat Enterprise Linux.

CentOS
used on a subdomain

Equinix is an American multinational company providing internet connection and data centers. This includes the former Telecity Group and Packet Host brands.

Equinix

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

Amazon
used on inner pages

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

Read the Docs
used on a subdomain
hosting info partly based on data from ipinfo.io

Equinix is an American multinational company providing internet connection and data centers. This includes the former Telecity Group and Packet Host brands.

Equinix

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

Amazon
used on inner pages

Cloudflare provides a content delivery network.

Cloudflare
used on inner pages

Fastly is a content delivery network.

Fastly
used on inner pages

Constellix provides DNS management services owned by DigiCert.

Constellix

Cloudflare provides DNS servers and other web services.

Cloudflare
used on a subdomain

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

Amazon

Gmail is the email service provided by Google.

Gmail
used on a subdomain

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

Let’s Encrypt

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

GlobalSign
used on inner pages

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

Starfield
used on a subdomain

StatCounter is a free hit counter and real-time web tracker.

StatCounter
used on inner pages

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

External CSS

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

Embedded CSS
used on a subdomain

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

Inline CSS
used on a subdomain

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

Session Cookies
used on a subdomain

Persistent cookies with an expiration time of more than 10 years.

Cookies expiring in decades
used on a subdomain

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

HttpOnly Cookies
used on a subdomain

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

Non-HttpOnly Cookies
used on a subdomain

Secure cookies are used only via an encrypted connections, which may increase security.

Secure Cookies
used on a subdomain

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

Non-Secure Cookies
used on a subdomain

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

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

Weak ETag
used on a subdomain

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.

IPv6

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

HTTP/2

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

HTTP/3
used on inner pages

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

HTTP Strict Transport Security

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

Default protocol https

HTML5 is the fifth revision of the HTML standard.

HTML5

Strict version of XHTML.

XHTML Strict 1.1
used on inner pages

Transitional version of XHTML.

XHTML Transitional 1.0
used on a subdomain

Transitional version of HTML.

HTML Transitional 4.0
used on a subdomain

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

UTF-8

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.

PNG

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

SVG
used on a subdomain

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

GIF
used until recently

Organizations

.org

United States
Netherlands
used on inner pages
Canada
used on inner pages

English

 

 

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