Another announcement from PluginAWeek 
We’ve got two new plugins for
ya this week:
loaded_plugins - Adds a global variable to the Ruby environment that
lists all of the plugins that Rails has loaded.
Wiki
http://wiki.pluginaweek.org/Loaded_plugins
Announcement
Source
http://svn.pluginaweek.org/trunk/plugins/rails/loaded_plugins
Development
http://dev.pluginaweek.org/browser/trunk/plugins/rails/loaded_plugins
plugin_migrations - Adds the ability for all plugins to have the same
migration capabilities that your Rails application has.
Wiki
http://wiki.pluginaweek.org/Plugin_migrations
Announcement
Source
http://svn.pluginaweek.org/trunk/plugins/active_record/migrations/plugin_migrations
Development
http://dev.pluginaweek.org/browser/trunk/plugins/active_record/migrations/plugin_migrations
Enjoy!