Privacy & Security

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StartupMaster

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

Rated 4 out of 5 stars (307)
1,382 users

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 (497)
744 users

Saved Password Editor Requires Restart

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

Rated 5 out of 5 stars (389)
654 users

Auto Password Registerer Requires Restart

Registers given passwords to Firefox/Thunderbird's password manager automatically.

Rated 5 out of 5 stars (2)
405 users

Password Exporter

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

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Rated 4 out of 5 stars (551)
340 users

Cookies Exterminator

Auto delete cookies, localStorage and IndexedDB objects as soon as they become unused

Rated 5 out of 5 stars (17)
292 users

Customizations for Adblock Plus

This extension provides various customization options for the Adblock Plus user interface.

Rated 5 out of 5 stars (15)
218 users

Silent Block

Minimum and fast URL blocker.

Rated 4 out of 5 stars (31)
211 users

Private Tab

Adds private tabs.

Rated 5 out of 5 stars (312)
205 users

QuickPasswords Requires Restart

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 SSO change (multi-domain pw) and Backup + Restore.

Rated 5 out of 5 stars (52)
144 users

Google Privacy Requires Restart

Make some popular websites respect your privacy settings.
Please see the known issues below!

Rated 4 out of 5 stars (33)
103 users

CookieKeeper

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (80)
93 users

Restart Application Button

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

Rated 5 out of 5 stars (2)
80 users

Proxy Privacy Ruler

Restrict Proxy by Private Windows, Tabs and Domain List

Rated 5 out of 5 stars (31)
79 users

YesScript Requires Restart

A JavaScript blacklist

Rated 4 out of 5 stars (225)
61 users

eCleaner Requires Restart

Clears preferences left by extensions after uninstallation

Rated 4 out of 5 stars (69)
56 users

WorldIP - Geo Add-on with Security Features Requires Restart

Professional Geo Add-on with security features and advanced network tools. Anti-phishing. Protection against DNS spoofing and fake sites. All DNS records for domain. The real location of web server, country flag, extended information about datacenter

Rated 5 out of 5 stars (124)
54 users

RequestPolicy 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 4 out of 5 stars (215)
51 users

RefControl Requires Restart

Control what gets sent as the HTTP Referer on a per-site basis.

Rated 4 out of 5 stars (180)
45 users

URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (23)
42 users