Privacy and Security

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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 (32)
13,467 users
Updated April 13, 2014

CookieKeeper No Restart

Extended Cookie Manager - Keep only wanted cookies.

Rated 5 out of 5 stars (9)
7,451 users
Updated April 10, 2014

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 or bribes...

Rated 5 out of 5 stars (162)
597,171 users
Updated April 10, 2014

Blend In

Blends OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS used the most in the world. Since 18.0t17.0.2 Windows is blended by default as well.

Rated 5 out of 5 stars (4)
541 users
Updated March 19, 2014

PennyPost

This extension makes it very easy to generate and attach stamps to outgoing mail. It also automatically detects and verifies stamps on incoming emails. The MBound algorithm requires a 16MB fixed table to work, HashCash is more CPU intense.

Not yet rated
9 users
Updated March 13, 2014

Silent Block

Minimum and fast URL blocking by regular expressions.

Rated 5 out of 5 stars (15)
4,399 users
Updated March 11, 2014

Secure Addressing

This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.

Rated 4 out of 5 stars (2)
212 users
Updated March 6, 2014

Flex Confirm Mail

Confirm mail address and attachments based on flexible rules.

Not yet rated
32 users
Updated March 4, 2014

ShowIP

Show the IP address(es) of the current page in the status bar. It also allows querying custom information services by IP (right click) and hostname (left click), like whois, netcraft, etc. Additionally you can copy the IP address to the clipboard.

Rated 3 out of 5 stars (207)
93,808 users
Updated March 4, 2014

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 (108)
107,614 users
Updated February 28, 2014

Disable Addons

Disable Addons.

Not yet rated
1 user
Updated February 27, 2014

Do Not Save Password

Prevents to save passwords.

Not yet rated
6 users
Updated February 27, 2014

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 (4,196)
18,423,626 users
Updated February 25, 2014

Disable about:config

Disable about:config feature of Firefox and Thunderbird.

Not yet rated
40 users
Updated February 24, 2014

Clear IMAP Local Cache

Clears IMAP local cache on startup.

Not yet rated
20 users
Updated February 24, 2014

Cert Importer

Imports certs automatically.

Not yet rated
5 users
Updated February 18, 2014

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)
3,729 users
Updated February 16, 2014

ToggleFullHeaders

Allows you to customise the message panel buttons to add a "Toggle Headers" button that will switch between showing and hiding the full headers.

Not yet rated
29 users
Updated February 13, 2014

ChiaraMail

Enhances Thunderbird with Envelope-Content Splitting (ECS) technology to provide you with a superior e-mail experience, including:

1. Preventing eavesdroppers from reading your mail
2. Protect against e-mail address "spoofing"

and much more.

Rated 5 out of 5 stars (1)
112 users
Updated February 13, 2014

FoxyProxy Basic

FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.

Rated 4 out of 5 stars (23)
34,140 users
Updated February 3, 2014