Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Privacy and Security
Adds the ability to create and edit entries in the password manager.
NoScript Security Suite Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Adblock Plus No Restart 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).
Pan No Restart
Block ads and manage proxy.
uBlock Origin No Restart
Finally, an efficient blocker. Easy on CPU and memory.
Mass Mail and Personal Mail
Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.
Easily and quickly to encrypt / decrypt
For users: private messages via e-mail, blogs, social networks, forums, etc.
For webmasters: websites, images, photos, etc.
Support: Firefox, Thunderbird and SeaMonkey
Bluhell Firewall No Restart
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Workaround for Bug 351163 (Thunderbird bypasses proxy.pac for first connection).
Clear Cache and Data No Restart
Clears the browser cache and other selected storage.
Prevents Google and Yandex from obfuscating and hijacking links in SERP.
Allows to copy/paste *direct* links from Google/Yandex search results instead of redirects.
Protection from adult content (parental control) and from dangerous sites.
Entrust protection for yourself and your children to professionals!
Private Tab No Restart
Adds private tabs.
Open text URLs from the context menu.
Identity Chooser helps you to always use the correct identity when composing a new email.
Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected
Element Hiding Helper for Pan No Restart
Help you create element hiding rules for Pan to fight the text ads.