Privacy & Security
Avoid redirects and has direct access to the sites you want to visit.
Manages the Click-to-Play domain whitelist.
Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager
Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.
View Dependencies Requires Restart
View Dependencies adds a tab to the Page Info window, in which it lists all the files which were loaded to show the current page.
Perspectives Requires Restart
Connect securely to https websites by checking certificates with network notaries. See http://www.perspectives-project.org
KDE Wallet password integration Requires Restart
This is an extension that allows firefox use kde's kwallet password manager to store passwords.
IsAdmin Requires Restart
Shows whether the application is running with admin privileges, using an icon in the status bar; useful if logged in as an administrator and you use privilege limitation tools such as DropMyRights, RunAs or Windows User Account Control.
Rewrite http response body using search & replace patterns
Keychain Services Integration Requires Restart
Store usernames and passwords in your Mac OS X Keychain.
Y U no validate Requires Restart
In the "Add Security Exception" dialog makes "Permanently store this exception" checkbox unchecked by default.
Previously known as XULernia. New name seems to be less misleading.
Close Proxy Authentication Requires Restart
Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.
Certificate Patrol Requires Restart
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
YesScript Requires Restart
Trueblock Plus Requires Restart
Trueblock Plus is a fork of the Adblock Plus extension for blocking unwanted advertisements on the web. This fork provides the exact same features as Adblock plus, with the unpopular, unwanted "acceptable ads" (non-)feature turned off by default.
This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.
Block advertisement and access to adult sites
NoRedirect Requires Restart
NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.
GProxy Tool Requires Restart
GProxy lets you set and clear GPass local proxy in Firefox and Thunderbird, and do more.
Adds an about:addons-memory page that details add-on memory usage