Privacy and Security

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Adblock Plus No Restart Featured

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Rated 5 out of 5 stars (4,302)
19,097,317 users

Saved Password Editor

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (167)
93,340 users

Identity Chooser

Identity Chooser helps you to always use the correct identity when composing a new email.

Rated 5 out of 5 stars (75)
8,818 users

Adblock Edge No Restart

Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.

Rated 5 out of 5 stars (190)
643,943 users

QuickPasswords

Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.

Now also includes single sign on change!

Rated 5 out of 5 stars (33)
11,548 users

TrayHotKey

为Fx5.0 及以上版本提供系统热键(老板键)功能

Rated 5 out of 5 stars (38)
4,239 users

Bluhell Firewall No Restart

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (127)
123,328 users

Mail Merge Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (114)
44,916 users

Auto Address Cleaner

Removes comment, display name automatically from addresses before sending mail.

Rated 5 out of 5 stars (40)
16,887 users

Hostname in Titlebar

Adds a hostname, URL, or email account ID to the titlebar to make it recognizable to password manager utilities like KeePass.

Rated 5 out of 5 stars (23)
3,860 users

Yet Another Remove It Permanently

Remove elements and block content on Web pages.

Rated 5 out of 5 stars (15)
1,747 users

S/MIME Security for Multiple Identities

Adds S/MIME Security configuration to the multiple identities dialog.
Meanwhile this feater has been integrated into Thunderbird 3

Rated 5 out of 5 stars (7)
71 users

POW -- Plain Old Webserver

Turn the web on its head with the Plain Old Webserver (POW), which adds a server to your browser.

Rated 5 out of 5 stars (17)
158 users

Silent Block

Minimum and fast URL blocking by regular expressions.

Rated 5 out of 5 stars (15)
5,459 users

Password Tags

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (5)
3,232 users

Confirm-Address

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (25)
47,660 users

Encrypt if possible

Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.

Rated 5 out of 5 stars (11)
1,907 users

Check and Send

Check the message contents and addresses before you send the message...

Rated 4 out of 5 stars (18)
24,473 users

Master Password+

Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows

Rated 4 out of 5 stars (88)
23,533 users

IsAdmin

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 Vista/7's User Account Control.

Rated 5 out of 5 stars (10)
1,024 users