The Jazzy Rise of Wordpress
Open source engine / Powered by PHP.
Used by over 12% of the 1.000.000 biggest websites.
Powering 8.5% of all websites on the net.
As of 4th October 2010 version 3.0 has been downloaded... 15.799.363 times the downloaded rate is about 2 more per second.
A small timeline
22 May 200. 1.2 Mingus supports plugins.
31 December 2005. 2.0 Duke adds richer text editing, image uploading and improvements for plugin developers.
16 May 2007. 2.2. Gets speed optimization.
29 March 2008. 2.5 Brecker interface restyling.
11 December 2008. 2.7 Coltrane new admin interface.
19 December 2009. 2.9 Carmen offers a global undo feature, built-in-image editor.
27 May 2003. 0.7 First version released by developers Matt Mullenweg, Ryan Boren and Donncha O Caoimh.
17 February 2005. 1.5 Strayhorn manage static pages and add a theme system.
22 January 2007. 2.1 Ella new interface, spell check, auto save, more security options.
24 September 2007. 2.3 Dexter support tagging system and security fixes.
15 July 2008. 2.6 Tyner tracking system for changer for changes to posts, enhanced posting tools.
10 June 2009. 2.8 Baker speed improvement, CodePress editor.
17 June 2010. 3.0 Thelonious new theme APIs. The merge of WordPress and WordPress MU, creating the multi-site functionality.
A real open source
The license is open source, GPLv2. Instead of building the core of WordPress to do a million things, the creators of WordPress were smarter and made the infrastructure open and extendable. As a result, a large community of software developers are building plugins.
11.496 available plugins (as of 4th October 2010).
Hello Dolly was the very first plugin available. It simply printed random lyrics from the song "Hello Dolly" to the Admin screen.
Most popular plugins
All in one Seo Pack - 5.928.058.
Google XML sitemaps - 4.325.698.
Akismet - 3.448.529.
Contact Form 7 - 2.381.325.
NextGen Gallery - 2.165.195.
Wordpress.com Stats - 1.864.693.
WP Super Cache - 1.437.392.
WP Touch iPhone Theme - 1.053.052.
Google Analyticator - 1.006.020.
Internal search engine.
Themes can be installed and switched between.
Tagging article system.
Trackbacks and linkbacks: to display external sites linking to the entry.
Ability to assign multiple and nested categories to articles.
Widgets (arrangeable without editing PHP and HTML).
An automatical RSS feed comes out with a feed.
Plugin architecture (allows users and developers to extend its functionality).
Akismet (it automatically blocks spam comments from your blog).
The anti-spam service
The Akismet plugin by Automatic has caught over 17.8 billions of spam comments, an average of 18 million per month.
Over 1.240 hosted in the theme directory and many thousands offered by webmasters outside of the wp theme directory, for a total of over 21.4 million downloads.
There are also over 800 commercial themes.