If you simply install Joomla! without any modifications or extensions, the following (incomplete) list of features will be included.
Joomla 3 - Current available version is
- Content component which allows creation and display of "content items" usually in the middle of the page.
- Front page component, which displays multiple recent content items designated as "front page" in the content manager. Configurable for layout and number of items.
- Tags for tagging all content types, articles, contacts, weblinks, etc.
- Weblinks component for entering and displaying a list of weblinks.
- Media manager for uploading and managing images and other media.
- User manager (administrative end) and user registration module (front end). Including ACL (Access Control Lists)
- Newsflash module for displaying specific content items as "newsflashes."
- Banner component for displaying ad banners with click tracking.
- Modules for latest items, most popular, and related items.
- A menu system
- A choice of several templates for your site
- Installers for third party extensions (templates, components, modules and plugins).
- The TinyMCE wysiwyg editor.
- The CodeMirror syntax highlighter editor
- Administrative interface for managing your site