If you seem these Opensource and free to use Content management systems Wordpress and Joomla, then most of the people use it for Blogging purpose and for build their websites. If we have to decided which one is best out them then we have to analyze their pros and cons which are as under.

Joomla:

Joomla is much more than just a powerful content management system. Its offers middle ground level between the developer-oriented and user-friendly but it has more complex development options than Wordpress provides. with all its Free and Paid extensions as well as plugins great for building and maintaining a superior website with all the features which you needs to be implemented in your joomla website. With the use of Joomla its easy to manage and update your content as and when you required. Skilled Joomla developer can also easily convert psd to joomla template. Over and above you can also get top rankings in the search engines, if you do with the proper technical improvements.

Joomla is designed to carry out a Complex websites, community platform, E-commerce, with strong social networking features long-term sustainability. You can depend up joomla for Large scaled websites which contains much data and media files.

WordPress:

For Blogging no one can beat WordPress, It's is easy to use blogging platform with wide range of Wordpress themes, widgets and plugins. As Content Management System wordpress is widely used for other website formats. Wordpress is best for simple web sites like personal blogging, Niche websites, One Page website, Informative websites etc. Its easy to convert your psd to wordpress theme [http://www.psdtoanything.net/psd-to-wordpress/] in short time if you have expertise in wordpress and its css structure.

WordPress templates [http://www.psdtowordpress.co/] are also very easy to install and customize as per your needs.. you don't have to be Technical expertise to use wordpress. It's so easy to manage your content, Post and your Media files from one place rather than Joomla.

Now in my Opinion, If we have choose one out them then there are many factors effect to choose the best for your need, it depends on your requirement, target customer and industry, Level of technical expertise, and we also needs to consider the financial portion involves for development. For a simple blog or small website, Wordpress could be the best decision.. On other hand for a complex, Large and highly customized websites needs much scalability and large content with more structured database, Joomla could be the best platform to use.