WORDPRESS OPEN SOURCE
WordPress started in 2003 with a single bit of code to enhance the typography of everyday writing and with fewer users than you can count on your fingers and toes. Since then it has grown to be the largest self-hosted blogging tool in the world, used on millions of sites and seen by tens of millions of people every day.
DOWNLOAD WORDPRESS LATEST VERSION 2.9.1
JOOMLA OPEN SOURCE
Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone.
DRUPAL OPEN SOURCE
Drupal is more than software–it is a project and a community. In this section, you’ll learn more about how it comes together, the people who make it happen, and the principles and values that they follow.
BLOGSPOT OPEN SOURCE ( Google )
Blogspot was started by a tiny company in San Francisco called Pyra Labs in August of 1999. This was in the midst of the dot-com boom. But we weren’t exactly a VC-funded, party-throwing, foosball-in-the-lobby-playing, free-beer-drinking outfit. (Unless it was other people’s free beer.)