Privacy and Security

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Adblock Plus 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 (5,739)
629,798 weekly downloads

Password Exporter

This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Rated 4 out of 5 stars (394)
9,268 weekly downloads

KeeFox Requires Restart

Simple and secure password management. Login automatically, never forget another password, stay in control of your passwords and improve their security. Powered by the world-renowned KeePass Password Safe.

Rated 5 out of 5 stars (1,119)
6,921 weekly downloads

Enigmail Requires Restart Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (196)
6,460 weekly downloads

Mail Merge Requires Restart Featured

Mass Mail and Personal Mail

Rated 5 out of 5 stars (148)
2,746 weekly downloads

Bluhell Firewall

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

Rated 4 out of 5 stars (462)
2,130 weekly downloads

Saved Password Editor Requires Restart

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

Rated 5 out of 5 stars (270)
1,949 weekly downloads

FoxyProxy Basic Requires Restart

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 (30)
1,813 weekly downloads

Master Password+ Requires Restart

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 (140)
1,091 weekly downloads

StartupMaster

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

Rated 4 out of 5 stars (244)
942 weekly downloads

MEGAbird Requires Restart

Add MEGA support to Thunderbird's Filelink feature.

Rated 5 out of 5 stars (8)
876 weekly downloads

Website Blocker Requires Restart

Block websites you don't want the browser to get into.
Block by a whole domain name or a specific address.
Block until further notice or until a certain date.

Rated 2 out of 5 stars (16)
844 weekly downloads

CookieKeeper

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (69)
738 weekly downloads

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 (26)
708 weekly downloads

Pan

Block ads and manage proxy.

Rated 5 out of 5 stars (81)
533 weekly downloads

GuifiProxy Requires Restart

Simple proxy manager
- Change proxy with two clicks
- Import and export proxies lists
- Manually add, delete and edit proxies
- Automatic authentication on proxies (bypass popup with login and password)
- Proxysel replacement

Rated 4 out of 5 stars (19)
452 weekly downloads

GProxy Plus Requires Restart

GProxy Plus lets you set and clear Freegate local proxy in Firefox and Thunderbird, and do more.

Not yet rated
414 weekly downloads

Check and Send Requires Restart

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

Rated 4 out of 5 stars (30)
391 weekly downloads

Confirm-Address Requires Restart

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (48)
374 weekly downloads

StopAll Ads

GO ADS FREE NOW!
Browse Safely. Optimize Surfing

Rated 5 out of 5 stars (7)
371 weekly downloads