Pose as another browser by changing the User-Agent header.
View and edit HTTP or HTTPS headers and post parameters.
Delete Internet history and other traces from your computer.
Save, encrypt and backup all your passwords and logins.
Keep all the separate parts of your online life neatly contained in different tabs
Download video and image files from various sites easily.
Boost up and customize your Google searches.
Block annoying ads and banners in Mozilla Firefox.
Block unwanted ads.
Get a conversation view for Thunderbird which can integrate with Thunderbird Contacts.
Receive warnings about risky Web sites that try to scam visitors, deliver malware, or send spam.
Convert webpages into e-books and multi-column PDF files.
