Question

Does Grails have any plugins with functionality similar to the django-debug-toolbar (djdt)?

See this screencast for an introduction to djdt.

Answer 1

Why yes it does grails debug-toolbar:

Grails Debug Toolbar is a plugin
inspired from Django Debug Toolbar

While it doesn’t have all the features of djdt it is planned to expand the feature set in the future, here is relevant section from their webpage:

Future work

• Currently the views of debugtoolbar
  need to go in the grails-app/views of
  the application. When you install the
  plugin they are automatically copied
  to your application grails-app/views.
  Need to avoid this.
• JavaScript and
  static resources for the toolbar
  reside in web-app/debugtoolbar. It is
  also copied to your application
  web-app/debugtoolbar. Need to avoid
  this.
• A way of ordering the panels in
  the toolbar. Currently it is random
  depending on how beans are found
  during execution of tag.
• More useful panels such as Timing the requests, SQL queries, logging etc