WordPress

WordPress

Developer(s)	WordPress Foundation
Initial release	May 27, 2003 (2003-05-27)
Stable release	4.2.1 / April 27, 2015 (2015-04-27)
Written in	PHP
Operating system	Cross-platform
Type	Blog software Content management software
License(s)	GNU General Public License v2
Website	WordPress.org

WordPress is a free open-source blogging tool and content management system (CMS) based on PHP and MySQL. It has many features including a plug-in architecture and a template system. WordPress is used by over 14.7% of Alexa Internet's "top 1 million" websites and as of August 2011 manages 22% of all new websites. WordPress is currently the most popular CMS in use on the Internet.

It was first released on May 27, 2003, by Matt Mullenweg as a fork of b2/cafelog. As of the end of March 2012, version 3.3 had been downloaded over 12.2 million times.

Product history

b2/cafelog, more commonly known as simply b2 or cafelog, was the precursor to WordPress. b2/cafelog was estimated to have been employed on approximately 2,000 blogs as of May 2003. It was written in PHP for use with MySQL by Michel Valdrighi, who is now a contributing developer to WordPress. Although WordPress is the official successor, another project, b2evolution, is also in active development.

WordPress first appeared in 2003 as a joint effort between Matt Mullenweg and Mike Little to create a fork of b2. The name WordPress was suggested by Christine Selleck Tremoulet, a friend of Mullenweg.

In 2004 the licensing terms for the competing Movable Type package were changed by Six Apart, and many of its most influential users migrated to WordPress. By October 2009, the Open Source CMS Market Share Report reached the conclusion that WordPress enjoyed the greatest brand strength of any open source content management system.

Releases

Most WordPress releases are codenamed after well-known jazz musicians, starting after version 1.0.

Version	Code name	Release date	Notes
0.70	none	27 May 2003	Used the same file structure as its predecessor, b2/cafelog, and continued the numbering from its last release, 0.6. Only 0.71-gold is available for download in the official WordPress Release Archive page.
1.2	Mingus	22 May 2004	Added support of plugins; which same identification headers are used unchanged in WordPress releases as of 2011.
1.5	Strayhorn	17 February 2005	Added a range of vital features, such as ability to manage static pages and a template/theme system. It was also equipped with a new default template (code named Kubrick) designed by Michael Heilemann.
2.0	Duke	31 December 2005	Added rich editing, better administration tools, image uploading, faster posting, improved import system, fully overhauled the back end, and various improvements to plugin developers.
2.1	Ella	22 January 2007	Corrected security issues, redesigned interface, enhanced editing tools (including integrated spell check and auto save), and improved content management options.
2.2	Getz	16 May 2007	Added widget support for templates, updated Atom feed support, and speed optimizations.
2.3	Dexter	24 September 2007	Added native tagging support, new taxonomy system for categories, and easy notification of updates, fully supports Atom 1.0, with the publishing protocol, and some much needed security fixes.
2.4	none	none
2.5	Brecker	29 March 2008	Version 2.4 was skipped, so version 2.5 added two releases worth of new code. The administration interface was fully redesigned, and the WordPress website to match the new style.
2.6	Tyner	15 July 2008	Added new features that made WordPress a more powerful CMS: it can now track changes to every post and page and allow easy posting from anywhere on the web.
2.7	Coltrane	11 December 2008	Administration interface redesigned fully, added automatic upgrades and installing plugins, from within the administration interface.
2.8	Baker	10 June 2009	Had improvements in speed, added automatic installing of themes from within administration interface, introduces the CodePress editor for syntax highlighting and a redesigned widget interface.
2.9	Carmen	19 December 2009	Added global undo, built-in image editor, batch plugin updating, and many less visible tweaks.
3.0	Thelonious	17 June 2010	Added a new theme application programming interfaces (API); the merge of WordPress and WordPress MU, creating the new multi-site functionality, a new default theme called "Twenty Ten", and many less visible tweaks.
3.1	Reinhardt	23 February 2011	Added the Admin Bar, which is displayed on all blog pages when an admin is logged in, and Post Format, best explained as a Tumblr like micro-blogging feature. It provides easy access to many critical functions, such as comments and updates. Includes internal linking abilities, a newly streamlined writing interface, and many other changes.
3.2	Gershwin	04 July 2011	Focused on making WordPress faster and lighter. Released only four months after version 3.1, reflecting the growing speed of development in the WordPress community.
3.3	Sonny	12 December 2011	Focused on making WordPress friendlier for beginners and tablet computer users.
3.4	Green	13 June 2012	Focused on improvements to theme customization, Twitter integration and several minor changes.
3.5	Elvin	11 December 2012	Support for the retina display, color picker, new theme: Twenty Twelve, improved image workflow
3.6	Oscar	01 August 2013	New theme: Twenty Thirteen; Admin enhancements: post formats UI update, menus UI improvements, revisions update, autosave and post locking
3.7	Basie	24 October 2013	Automatically apply maintenance and security updates in the background; Stronger password recommendations; Support for automatically installing the right language files and keeping them up to date
3.8	Parker	12 December 2013	Improved admin interface; Responsive design for mobile devices; New typography using Open Sans; Admin color schemes; Redesigned theme management interface; Simplified main dashboard; Twenty Fourteen magazine style default theme; Second release using "plugin-first development process"
3.9	Smith	16 April 2014	Live widget previews; New theme installer; UI refinements when working with media; Advanced display settings for images

Features

Primary functions of WordPress include:

• W3C compliance
• no rebuilding/regeneration
• static pages
• internal links
• theme support
• cross-blog communication
• comment support and control
• spam protection
• built-in user registration system
• granular post security
• user-based security
• import support
• XML-RPC interface
• typographical XHTML conversion
• intelligent text formatting
• bookmarklet support
• Ping-O-Matic support

Hardware/software requirements

The installation requirements for WordPress 3.2 through 3.9 include:

• PHP version 5.2.4 or greater
• MySQL version 5.0 or greater

For WordPress 3.1:

• PHP version 4.3 or greater
• MySQL version 4.1.2 or greater

Additional requirement information can be found here.

Videos, screenshots, and other media

Screenshots of WordPress can be found on the website.

An online demo of WordPress is located at OpenSource CMS.

Entities using WordPress

Examples of entities using WordPress include:

Administrative Council of the United States, Adobe, Barnsley Hospital NHS Foundation Trust, Ben and Jerry's, Cookies for Kids' Cancer, Crossover Health, CURE International, Forbes, Ford Motor Company, General Electric, ILiveWithADisability.com, Intellectual Ventures Lab, Library of Congress, LIVESTRONG, Nokia, OpenView Labs, Ovarian Cancer National Alliance, Philips, Portuguese Office of the High Commissioner for Health, ResearchWorks, Samsung, The Nieman Journalism Lab at Harvard University, The University Of British Columbia, University of Arkansas at Little Rock, University of Missouri College of Engineering,

A full directory of WordPress users can be found at the WordPress website.

Further reading

• "WordPress Documentation". WordPress.org. http://codex.wordpress.org/Main_Page. 

• "Books about WordPress". WordPress.org. http://wordpress.org/about/books/. 

External links

• WordPress on GitHub
• WordPress free themes directory