WordPress is another Open Source Content Management Solution. Again, freely available to download, install and use right now. Developed as a blogging platform, WordPress has evolved and can be used as a CMS without learning any coding. Functionality is extended by using plugins – there are just about as many as you could find use for. Visually WordPress can be customised by altering builtin themes or simply downloading new ones with a click. There is a vast amount of free themes and plugins and for business there is also a very strong developer community offering paid themes or plugins for professional use.
WordPress can be downloaded as a package to be installed if you have your own hosting (or even a local web server); alternatively you can visit http://www.wordpress.com and create a free blog hosted for you. (Customisation options are more limited this way, but it is an excellent way to have a look at WordPress without fiddling around with hosting).
This site is built with WordPress.