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Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Privacy & Security
Cookie Block No Restart
Keep the cookies you want, block everything else.
Provides transparent proxy authentication on your enterprise network.
Close authentication dialog if login on proxy failed.
uMatrix No Restart
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
DontPhishMe is an Anti-Phishing addon for Mozilla Firefox which utilizes the pattern matching techniques to provide the Malaysian Internet user with information and notification to protect them against online banking phishing website.
Locks Firefox down so it can be used as a public kiosk. Removal instructions are in the full description.
Hide the tabbar by just pressing a key.
Blocks URLs , Stop Downloads Bad Extensions and locks down Firefox Settings....
Lock down bookmarks/addons/downloads with a password.............Any Many More...
User-Agent Switcher No Restart
Quickly and easily switch between popular user-agent strings.
CookiesOK No Restart
CookiesOK aims to automatically accept cookies on websites that are affected by the recent (26-02-2011) EU cookie laws.
Blockulicious No Restart
Blockulicious adds a level of powerful security and non-intrusive to your browsing experience.
Inspect webpages or mail headers
Extended DNSSEC Validator validates DNSSEC signed records for domains. Signed TLSA records containing a hash of the HTTPS certificate can be used to validate self-signed certificates or provide additional trust in their CA-signed certificates.
counterfeit.io No Restart
To know if this web site is susceptible of selling imitations.
Whitelist Ninja No Restart
Parental Control by a whitelist of sites, admin is by password
We use this for young children to keep them on the sites we have pre approved
You can add new sites with the click of a button
signTextJS No Restart
Avetix Safe Browsing No Restart
Avetix Safe Browsing Plugin
Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.
Proxy List Pro No Restart
Proxy List Pro is a simple and completely FREE web proxy service (no ads). Perfect for those looking to bypass censorship restrictions and/or looking to browse the internet privately, anonymously and securely.
Adult Blocker No Restart
Adult Blocker (Parental Control) to limit the access of children and adolescents to undesirable sites, such as porn-sites (adult content, pornography), sites where Contains profanity or promotion of violence is present.
BehindTheOverlay No Restart
One click to close any overlay popup on any website.
Have you ever been to a website that displays an overlay and masks the content with a transparent background before seeing its content ?
This extension allows you to close easily those overlays.