The Movable Type Extended Developers Kit (MT-XDK) is a loose collection of classes that extends and enhances the MT API for developing sophisticated plugins rapidly.

MT::XPlugin - a base class for creating sophisticated plugin objects that enabled convention over configuration in an object-oriented way.

MT::ConfigMgr::Plugin - a base class for creating object-oriented configuration objects.

MT::Log::Base - a base class for creating better MT Activity Log objects quickly

MT::Tool - a Movable Type application module use for developing command line tools.

MT::Object::Pseudo - a base class for creating MT::Object-like classes using the MT::PluginData data store instead of a class-specific database table.

MT::TemplateFile - Movable Type page generation from a template stored as a plain text file