Bugzilla Tweaks - This Firefox extension modifies the pages loaded from bugzilla.mozilla.org and adds features including:
• Interleaving the bug's change history with the comments on the same page
• Showing the last time that a bug or attachment flag was changed
• Proving user name autocompletion support
• And many more..
HTTP Client - This app allows you to make HTTP requests to any web services on the net. It supports GET, POST, PUT and DELETE requests. Headers and parameters also available for customization
Add-on Compatibility Reporter - Help Mozilla make sure your favorite add-ons get updated for upcoming Firefox releases by using this extension to report whether they still work or are having some issues with alpha and beta releases
