Privacy and Security

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No Resource URI Leak

Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246

Rated 4 out of 5 stars (30)
3,716 users

KeePass Helper Requires Restart

Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.

Rated 4 out of 5 stars (40)
2,596 users

Bork Bork Bork! Requires Restart

The Swedish Chef travesty filter and URL blocker. View web pages or mail as spoken by the Swedish Chef like this...

"Zee Svedeesh Cheff trefesty feelter und URL blucker. Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff leeke-a thees."

Rated 4 out of 5 stars (30)
20 users

CookieKeeper

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (79)
7,202 users

Lock The Text Requires Restart

Encrypt your text data in browser before you submit it to a network

Rated 5 out of 5 stars (10)
229 users

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.

Rated 5 out of 5 stars (10)
303 users

DL for Thunderbird Requires Restart

Allows to convert large attachments to links automatically without 3rd party providers.

Rated 5 out of 5 stars (4)
1,787 users

Silent Block

Minimum and fast URL blocker.

Rated 4 out of 5 stars (31)
2,849 users

PennyPost Requires Restart

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.

Rated 5 out of 5 stars (4)
26 users

DKIM Verifier Requires Restart

Verifies the DKIM-Signature of an e-mail.

Rated 4 out of 5 stars (17)
5,504 users

Allow HTML Temp Requires Restart

This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).

Rated 4 out of 5 stars (61)
10,474 users

View Your Certificates Email Address

Adds a column for displaying the certificates Email address to the "Your Certificates" tab of the Certificate Manager

Rated 5 out of 5 stars (5)
436 users

StartupMaster

Asks for the master password at startup (fixes multiple password prompt)

Rated 4 out of 5 stars (269)
19,815 users

Extensor

Quick access to add-on functions from a toolbar panel: Options, (De)Activate, Details, Home page, Review page, Donation page, Uninstall, Restart application.

Rated 5 out of 5 stars (5)
79 users

Check and Send Requires Restart

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

Rated 4 out of 5 stars (30)
13,585 users

CookieFast Requires Restart

A small ergonomic 1-click cookie manager.

Rated 4 out of 5 stars (9)
143 users

Automatic Export Requires Restart

exports by an intervall or after pressing the button selected calendars in a defined folder in two modes - normal and backup...

On my homepage is the current version.
Here on this site it takes a long time after i publish a new version.

Rated 4 out of 5 stars (44)
2,540 users

Keychain Services Integration Requires Restart

Store usernames and passwords in your Mac OS X Keychain.

Rated 4 out of 5 stars (92)
2,544 users

Close Proxy Authentication Requires Restart

Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.

Rated 5 out of 5 stars (5)
2,152 users

WarnAttachment Requires Restart

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (3)
468 users