Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Privacy and Security
Mass Mail and Personal Mail
Allows recipients to cancel their newsletter subscriptions in the thunderbird interface.
FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.
Configures Mozilla for work with certificates issued by InfoNotary Plc.
Shows an icon on the status bar when the mouse cursor is over a link to a page you bookmarked or visited before. In Firefox 3.5 and later, the extension also offers an option to disable the visited link styling to reduce the risk to privacy.
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
NoRedirect lets the user take control of HTTP redirects. It can be used to interdict an ISP's DNS search redirection hijacks, preview/screen "shortened" URLs (e.g., TinyURL), stop the annoying redirection of "smart" error pages, etc.
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
Secure remote storage of your personnal passwords, bookmarks and notes, crypted by your navigator. Auto-login, auto fill, auto detect authentication forms or HTTP-authentication, Single Sign-On, always synchronized with all your firefox navigators.
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.
Workaround for Bug 351163 (Thunderbird bypasses proxy.pac for first connection).
Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.
An extension to warn about nearly-expired website SSL certificates.
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
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
Connect securely to https websites by checking certificates with network notaries. See http://www.perspectives-project.org
Your browser trusts many certification authorities and intermediate sub-authorities quietly, every time you enter an HTTPS web site. This add-on reveals when certificates are updated, so you can ensure it was a legitimate change.
Gives an option to show the master password on input
XML Digital Signature Tool is a Firefox add-on for processing Digital Signature in XML documents
(Please read the installation instruction in the "Developer Comments" section before downloading)
KeyManager Tool: Firefox Add-on for Key Generation, Certificate Enrollment, CRL Signing, and Identity and Authority Delegation