Quickly switch among sidebars, and view dialog windows for downloads and extensions.
See who's tracking you online.
View and convert among character references, Unicode, and HTML entities.
Search the Web and support the tree planting program in Brazil.
Know who removed you on Facebook.
Block all Firefox pop-ups.
Set and convert plain text addresses in Facebook.
Boost up and customize your Google searches.
Run speed test of broadband connections and basic network diagnostics.
Evaluate SQL injections, XSS holes, and site security.
Save Web pages locally and manage collections easily.
Create and post HTTP requests on your favorite Web service or site.