Drupal for Firebug extends the Firebug module to provide Drupal specific debugging and status messages. The 2.0 version doesn't work, until 2.1 is approved by mozilla, we recommend Downloading straight from the Project's Repository page.
Drupal for Firebug extends the Firebug module to provide Drupal specific debugging and status messages. It allows users to see the processing of the node, form, and user objects and works with the Devel module to display SQL queries and execute PHP from the Firebug window. It incorporates jQuery 1.26 for added UI improvements.
You must download the DrupalForFirebug Drupal module to use this extension: http://drupal.org/project/drupalforfirebug
To have the most up-to-date version of the addon possible, please download the alpha* from the Developer Channel at the bottom of this page. Or you can goto the project page over at bitbucket https://bitbucket.org/frob/drupalforfirebug/downloads and download the latest release.