MODx Revolution has many new features compared to the Evolution product :-
- New Core - Revolution 2.0 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 REvolution 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. Download Extras from modxcms.com straight from the manager. Watch the automated installs. Create custom distributions for your add-ons 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.). And yes, the upgrade system for legacy sites takes care of changing over the old ones, in case you're curious.
- Property Sets - Tired of duplicating common tag syntaxes for your snippets across your site? No more! Property Sets allow you to assign collections of properties to any Element; and manage them in a nice UI grid.
- The Manager is MODx - we've created the new Manager for MODx Revolution by using the MODx API, ExtJS 3, 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. There is built-in emulation of the old security model and your existing security setups for both the manager and webusers should be ported over fine during upgrades.
- 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.
A full glossary of MODx Revolution terminology can be found here.