Privacy and Security

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RequestPolicy v0.5 Legacy Requires Restart

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 3 out of 5 stars (6)
786 users

Modify HTTP Response

Rewrite http response body using search & replace patterns

Rated 4 out of 5 stars (5)
756 users

Restart Application Button

Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.

Rated 4 out of 5 stars (3)
684 users

Show Password On Input Requires Restart

Gives an option to show the master password on input

Rated 4 out of 5 stars (11)
667 users

PrivaConf

Automatically apply settings recommended by security and privacy experts.

Rated 3 out of 5 stars (3)
608 users

Mailsleuth Requires Restart

Mailsleuth is a add-on for Thunderbird that provides you a full email header analysis of any email in your Inbox. This add-on is designed to provide a report on the email headers on any email you choose from your inbox. MAJOR updates for Feb 2013!

Rated 3 out of 5 stars (7)
586 users

clamdrib LIN Requires Restart

"clamdrib LIN" ist wie der Name schon sagt die Weiterentwicklung des Add-on clamdrib, allerdings nur noch für Linux. Sämtliche E-Mails, Feeds und News werden auf Viren und anderes Ungeziefer geprüft und gemeldet. Gelöscht wird hierbei jedoch nichts!

Rated 4 out of 5 stars (3)
573 users

Advanced Dork: Requires Restart

Advanced Dork: gives quick access to Google's Advanced Operators directly from the context menu...

Rated 5 out of 5 stars (21)
531 users

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.

Rated 4 out of 5 stars (45)
476 users

RequestPolicy Sync

Sync engine for RequestPolicy.

Rated 5 out of 5 stars (3)
453 users

Fetch Text URL (fix version) Requires Restart

Open text URLs from the context menu.

Rated 5 out of 5 stars (5)
445 users

Export All Certificates Requires Restart

Adds an option to export all root certificates.

Rated 3 out of 5 stars (2)
440 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)
410 users

Native AdBlocker

한국 웹의 광고를 효율적으로 차단합니다.

Rated 5 out of 5 stars (7)
367 users

TotalSpoof

Set most common Firefox user-agent and window.navigator values.

Rated 3 out of 5 stars (4)
331 users

HD Video Downloader

Download every YouTube video you want and you can download them as Full HD MP4, FLV, 3GP, MP3, M4A and AAC formats.

Rated 4 out of 5 stars (2)
308 users

TheRealURL Requires Restart

Get URL information: expand short URLs, get title and content type information without visiting the site.

UPDATE, AUG 2013: THIS EXTENSION IS NO LONGER SUPPORTED. The source is open - if you wish to take on the development, you're welcome.

Rated 3 out of 5 stars (7)
247 users

fairBlock

Un bloqueur de publicité équitable. Préservez le web gratuit en choisissant sur quels sites vous bloquez la publicité.

Rated 3 out of 5 stars (3)
224 users

Conspiracy Requires Restart

Shows flag/country of involved Certification Authorities (CAs) for secured pages.

Rated 5 out of 5 stars (3)
218 users

Element Hiding Helper for Pan

Help you create element hiding rules for Pan to fight the text ads.

Rated 5 out of 5 stars (6)
203 users