• WYSIWYG text editor
• In-context editing toolbar – change your website as you surf!
• Automatic navigations – add a page anywhere and it's updated everywhere
• Preview your changes before publishing
• Track versions, and compare differences between them
• File manager with bulk upload and image manipulation using Picnik (Picnik integration in v5.3)
• Detailed permissions – create editor groups, approve content, and see an audit trail
• Drag-n-Drop content around your pages.
• Scrapbook lets you copy content and functionality from one part of your site to another
• Integrated spellchecker
• Flexible meta data & vanity URLs for Search Engine Optimization (SEO)
• Easy Google Analytics integration
• Integrated help system with commercial support options (v5.3)
• Automatic add-on & theme installation (v5.3)
• An open marketplace of add-ons
• Content scheduling – write something now, and have it go live automatically later
• Out of the box includes a photo slide show, You Tube integration, guestbook, Flash support, polls, surveys, search, RSS, secure file distribution, Google Maps, and a form generation tool
  

Are you a developer interested in Concrete? You're probably interested in information about Concrete's underlying structure. As an application framework, Concrete features:

• Integration with the popular, powerful ADODB Database Framework, which allows exposure to the following database functionality:
  • Data Portability: while Concrete CMS has only been tested extensively with MySQL, it should be mostly portable to other databases like PostgreSQL.
  • Database schemas for blocks and the site's tables are defined in XML, allowing them to be easily modified and imported across upgrades, using ADOXMLS
  • Data caching at the query level
  • A simple ActiveRecord pattern, which is used to make adding custom block types a breeze.
• A built-in user authentication (including OpenID) and powerful permissions framework
• Extensible metadata about users, pages and files. Define attributes for pages/collections and users, and reference them programmatically with ease. Use this metadata for your own purposes, or expose them to your users through automatically created HTML forms.
• A powerful file manager which enables custom file-type-based editing, viewing and metadata import.
• Create block types for small bits of unique content types, page types for templates, and static pages for one-off pages/forms on a site, then package them into Concrete 5 packages. Packages can even include dashboard pages and modules.
• Static pages and reusable page types alike can employ a powerful Model-View-Controller syntax that makes adding special application logic into your Concrete apps a breeze.
• A powerful, consistent API for common tasks, including:
  • User creation
  • Page creation
  • Block and Block Type Creation
  • Adding Blocks and Attaching them to Pages
  • more...
• While pages are collections of blocks that are intended to be shown to end users, collection themselves don't have to have a presentation layer; they can easily just be generated by a unique key, and used behind the scenes as a way to group blocks together.
• Helpers for assisting with common web-related tasks like validation and sending mail, and libraries for core application functionality.