WordPress

WordPress is free, easy-to-start and powerful CMS.

A live activity across WordPress.com:

CMS usage statistics (CMS usage stats and WordPress usage stats by builtwith.com): WordPress is used on the 18% of the top 1 million web-sites. WordPress CMS market share: 56%. 22% of new sites uses WordPress.

Links:

• WordPress roadmap trac
• WordPress version stats (PHP and MySQL version stats)
• Number of sites build with WordPress
• WordPress philosophy
• WordPress developers
• WordPress developers on map around the world

Users use WordPress (by the result of surveys in 2011):

• as just a CMS - 61%
• as blog & CMS - 31%
• as just a blog - 8%

Popularity of WordPress on trends:

Popularity of WordPress on insights

WordPress awards

• in 2011 WordPress won the Open Source Web App of the Year Award at The Critters;
• in 2010 WordPress won the Hall of Fame CMS category in the 2010 Open Source Awards;
• in 2009 WordPress won the Packt best Open Source CMS Awards;

My links:

• webvitaly on stackoverflow careers
• plugin-committer webvitaly
• plugin-committer webvitaly rss
• plugin-contributor webvitaly