MODx CMS released version 2.0.0 with tons of new features, mainly a new core with multi sites support. After over three years of active development, MODx is becoming mature content management system that could easily fit with your needs. I love the idea of exporting the website as static html pages, and generate much much more traffic with really minimum resources. MODx provides web standard support, an improved Rich Text editor, Graphical installer and lots of web 2.0 features.

New 2.0.0 Features include :

• New Core - Revolution sports a completely new core, written from the ground-up. It uses the database modeling framework, xPDO.
  
• Completely configurable - run multiple sites on one core install, install the core outside of webroot, pick any name for the manager and assets directories, change and restructure every manager menu option.
  
• New parser - fully and infinitely recursive without using regex and no more eval().
  
• Improved caching options - goodbye 5000 page limit, hello any caching system you so desire to implement. This makes MODx an even better candidate for larger sites with lots of traffic. Also, any Element can now be specified to be treated as a cached or non-cached. There's even a clean path to completely override the default caching system to implement large-scale caching code like memcached.
  
• Override everything & lose nothing - as implied by the previous bullet, you can now extend or override any part of the MODx core cleanly and simply, all the while maintaining a clean upgrade path for future releases.
  
• New Transport Packages - Installing just got a whole lot easier. Create custom distributions and more.
  
• Contexts - this allows developers to assign different views of your site based on pretty much any criteria. This means native multi-sites, subdomains, running the core outside of webroot
  
• Core logging - Provides various error levels and output targets including ECHO, HTML, and FILE. You can also use it in add-ons for audit logs, error logs, debugging, or other logging needs.
  
• Unified, simple tags - supports calls to MODx resources broken across multiple lines, cached calls within cached calls, and allows PHx-like modifiers to be attached to any Element (Snippet, Chunk, TV, Etc.).
  
• The Manager is MODx - we've created the new Manager for the MODx system by using the MODx API, ExtJS, and Smarty templates, as a demonstration of the flexibility of the new core and API.
  
• Completely new user system - all permissions are now handled via a robust. Attribute Based Access Control (ABAC) security model. Web users and Manager users are now merged into one, simple Users, which can be extended to provide external authentication.
  
• Element Properties - All Element types have properties now, including Chunks, TVs, Templates and Plugins.
  
• Lexicon Management - Manage your entire MODx system's lexicons, all from within the manager.
  
• Property Sets - No longer do you have to duplicate snippet calls across your entire site. Create a Property Set, assign it, and then manage all the calls in one, simple location.
  
• Remote Transport Packaging - Install resources by downloading them from custom providers - either MODx-driven or 3rd party - from directly within the Manager.
  
• New Static Resources - now you can manage files on the filesystem (even outside of webroot) within the Manager.
  
• New Symlink Resources - exact clones of other resources in your site tree in as many places as you'd like.

More information and download at http://modxcms.com/