Mambo offers the following features.

• Licensed under the GNU/GPL.
• The easiest to use CMS there is. Most users can pick up the interface with little or no training. This means you or your users can be maintaining the site right away. If you can use a web browser, you can use Mambo Open Source.
• Inline WYSIWYG content editors. Mambo Open Source uses HTMLArea. There is now support for the latest BETA of HTMLArea3.
• Simple template engine for maximum layout flexibility.
• Many built-in modules and components are included
• Highly configurable newsfeed system
• RSS Syndicated News
• Banner Management System
• Newsflashes
• Mass mailing to registered users
• WebLink Manager
• Database Backup and Restore
• System Statistics (Browser & OS)
• Built in Administration Help System
• Easy administration of site wide images
• Content Archiving
• Content Versioning
• Automatic publishing and expiration support of content based on date
• Metadata support
• Integrated search engine.
• Support for over 20 languages
• Template management system allows for quick and powerful page layout changes.
• Package management system for modules and components
• Flexible, Mambo Open Source 4.5 should run under any web server, on any operating system that supports PHP and MySQL.
• Modular design so the code is easy to update, change, and replace.