View and edit HTTP or HTTPS headers and post parameters.
Automate password-entering and form-filling.
Protect your computer from Java vulnerabilities while surfing with Firefox.
Know who removed you on Facebook.
Pose as another browser by changing the User-Agent header.
Delete all your Facebook messages in a single click.
Get cash back and automatically find and apply coupons.
Force Web sites to load in HTTPS.
Block annoying ads and banners in Mozilla Firefox.
Browse, review, and share sites with like-minded people in Firefox.
