Pose as another browser by changing the User-Agent header.
Skip AdF.ly page and move to the actual page.
Correct misspelled words and phrase on Web.
Save, encrypt and backup all your passwords and logins.
Enhance your Reddit browsing experience.
Download multiple files from various Web pages.
Beautify your Firefox with this flowery theme.
Stop third parties and search engines from tracking the webpages you go to and searches you do.
Convert webpages into e-books and multi-column PDF files.