Drupal became one of the most comprehensive CMS systems available. The script has a very specific programming enviroment, that could be described better as a programmer's platform than a simple CMS script.
Includes a lot of functionality
Drupal includes lot of functionalities like: advanced menu management, polls management, graphics modification tool, users management and much more. These functions make it possible to create simple or advanced websites, blogs, discussion boards, social networking pages, etc.
Variety of content types
Drupal is famous for allowing to create and manage many content types, like: videos, polls, user management, text, blogs, podcasts, statistics, and others.
Advanced users management
An administrator can create new user accounts and establish their permission rights. Users can be divided into groups and can be given assignments. They can be given permissions to manage parts of your website.
The script includes capabilities of design elements editing. Available templates and themes make for a good start. Predefined page functions configurations make it easy to create both a simple as well as more complicated page configurations.
Page content management
Drupal allows you to categorize your content through URL addresses, paths, making your own lists. This structure makes for easy management, search and reuse of the content.
The script has several thousands of plugins available on its website. Since Drupal is an Open Source, you can use as well as create your own plugins.
On the Drupal homepage, there's a documentation, well developed discussion board, chat, mailing list, etc. You can find there plenty of information and help concerning managment and modification of the script.
Installation and modification
The script is not very user-friendly and requires advanced knowledge to install and modify. Quick.Cms, WordPress and even Joomla are simpler to use, even thoug they do not offer functionalities as rich as Drupal does.
Drupal have planty of new solutions. If you're used to older systems, getting used to this script will take some time.
When considering scalibility and efficiency, Drupal is far behind other scripts like Quick.Cms or WordPress. If your website is very large, the script will generate a big server load. It is caused by the big range of possibilities provided by Drupal. There are however plugins that load a website to the server's cache, what decreases the server load.
Drupal is an advanced CMS system offering plenty functions, that in other scripts require installing many plugins (if they are at all available). Unfortunately it means, that any interference in the script's code requires advanced knowledge of PHP and HTML languages as well as CSS. Luckily for those with at least basic knowledge of these languages, there's a very good technical support. Using this script one has to be aware though, that as traffic on your website increases, there might come a time when the server adminsistrator shuts your site down due to too heavy server load.