If you are a with intention to have or manage a web site with more than only a few pages, you definitely need to consider to use a . CMS stands for and enables you to manage and administrate your website quite easily, even if you would have a very heavy traffic on your pages, extensive number of content pages or both, as well as for small websites.
Here is a list of available on wikipedia.
There are two main scripts, said to be the two biggest ones:
is said to be the biggest one with the top traffic websites. One of the reasons claimed have been that Google "loves" Wordpress from a perspective. Wordpress is more interesting for webmasters that want to focus mainly on content and less on design. Thousands of plugins are available for all kinds of different features that you might want for your web site.
, could be more attractive for webmasters that want more control of the the web site design and features. There are also extensively more plugins available for Joomla. Both Wordpress and Joomla are for free, however some of the plugins for Joomla can cost you money. If you take care about configuring you can tweak Joomla to be as "loved" by Google as Wordpress, or better, but it takes more efforts on your part.