MODx is an open source PHP application framework and CMS for creating modern web apps. It allows developers and advanced users to get as much control as needed. It is not only a CMS, but a framework at the same time, making it a CMF, and one of the best at it.

Features of MODx:
- Strong Web standards support
- Ajax enabled
- PHP application framework included
- Cross-browser tested
- Graphic installer
- WYSIWYG editing
- Menu manger
- PAge management
- User administration
- Nicely crafted admin backend
- SEO customization options
- User sessions management
- Error handling
- Themes
- Add-ons
- Custom Content Types
- Documentation

Requirements:
- PHP 4.3.11 or Higher
- Apache 1.3 or Higher
- GD library
- SimpleXML
- PDO
- Freetype
- MySQL, PostreSQL or SQLite PDO drivers
- mcrypt + mhash
- SOAP
- 64MB (or higher) Memory Limit
- MySQL 4.1.20 or higher
- Ability to override server configuration via .htaccess files
- SSH access with sudo privileges
- Permissions to edit PHP, Apache and MySQL config files
- Firefox 3 or Safari 3.1.2 or later for the Manager

What's New in This Version:
- Allow loading of modExt files asynchronously
- Report errors about unpublishing site_start to user
- Load RTE for SymLinks in manager
- Allow Unicode chars via modX::sanitizeString()
- Fix image preview with special chars in filename
- Remove connections data from MODx.config
- Fix invalid ini boolean evaluation in config_check processor
- Allow modX::getParser() to get an extended modParser instance
- Fix invalid context assignment in modX::switchContext()
- modPackageGetAttributeProcessor returning wrong PACKAGE_ACTION
- Add modx-combo-source as settings type
- MODx.Browser UX improvements
- Increase width of file and image TVs
- Fix Minify errors when manager on different subdomain
- Various Manager UI Fixes
- Fix issues with auto_publish when encountering invalid data
- Fix modTemplateVarRender::_loadLexiconTopics()
- Fix workspace/lexicon/getlist strict notice in PHP 5.4+
- Use Resource context_key in update processor when not specified
- Fix SQL syntax error in modTemplateVar->findPolicy()
- Make sure class_key is passed when switching templates
- Add support for httpOnly session cookies in PHP 5.2+
- Provide multi-node support to flock-independent file locking
- Remove LOCK_EX from flock-independent file locking method