Wordpress Open Source CMS
Wordpress is one of the oldest open source content management systems (CMS) around today and has a wealth of custom modules and theme available free to download.
Wordpress is primarily asssociated with blog type websites but can be used for almost any type of website.
If you require a blog type website or would like to have a blog on your current website then worpress would be a good choice.
As Wordpress has been around for so long Google has developed a unique understanding of it. This means that when you use Wordpress for your blog site you will immediately have an advantage in Google rankings as it will be understood by Google and ranked higher in the search listings.
Wordpress has a huge community working on it every day unsuring the CMS is kept up to date with technology advancements and security features.