• uBlock Origin icon

    uBlock Origin

    uBlock Origin - An efficient blocker for Chromium, Firefox, and Seamonkey forked from uBlock . Fast and lean AND still being actively improved.

    Open Source Mac Windows Linux Android ... Windows RT Android Tablet BSD Microsoft Edge Vivaldi Browser Chrome Yandex.Browser FreeBSD Opera SeaMonkey Chromium Firefox

  • Lightning icon

    Lightning

    Lightning brings the Sunbird calendar to the popular email client, Mozilla Thunderbird and the SeaMonkey internet application suite. Since its an extension, Lightning is tightly integrated with Thunderbird or SeaMonkey...

    Open Source Mac Windows Linux Thunderbird ... SeaMonkey

  • Enigmail icon

    Enigmail

    Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the OpenPGP standard. Sending and receiving encrypted and digitally...

    Open Source Mac Windows Linux Thunderbird ... SeaMonkey

  • Web Developer icon

    Web Developer

    The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock and Seamonkey, and will run on any platform that these browsers support including Windows, Mac OS X...

    Open Source Mac Windows Linux Chrome ... Flock SeaMonkey Firefox

    • Discontinued The Web Developer extension is no longer developed/supported by the author since 2014 and gives javascript errors on the console each time a user opens a page or switches tabs.
  • Mozilla Archive Format icon

    Mozilla Archive Format

    Save complete web pages in a single file, using one of the following formats: MAFF (Mozilla Archive Format File) or MHTML (Internet Explorers MHT). Mozilla Archive Format, or MAF, is an extension for Firefox and SeaMonkey that enables...

    Open Source Mac Windows Linux SeaMonkey ... Firefox

  • SQLite Manager icon

    SQLite Manager

    Manage all your SQLite databases using this lightweight extension for Firefox, Thunderbird, SeaMonkey, Songbird, Komodo etc. (See the complete list of supported applications) This extension will be useful to developers who want to create...

    Open Source Mac Windows Linux Komodo IDE ... Thunderbird Songbird SeaMonkey Firefox

  • Chatzilla icon

    Chatzilla

    ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and...

    Open Source Mac Windows Linux SeaMonkey ... Firefox

  • NewsFox icon

    NewsFox

    NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader. NewsFox allows you to group your feeds as you wish, read feed content offline, update feeds when you want, 1-click subscribe with the Firefox URL bar icon, and read other...

    Open Source Windows Linux K-Meleon SeaMonkey ... Firefox

  • Restartless Restart icon

    Restartless Restart

    This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.

    Free Mac Windows Linux SeaMonkey ... Firefox

  • Secure Login icon

    Secure Login

    Secure Login is a login extension for Mozilla Firefox integrated password manager. Its main feature is similar to Opera - Wand login. Features: * Easy installation through Mozilla Firefox add-ons system. * Works out of...

    Free Mac Windows Linux Sunbird ... Thunderbird SeaMonkey Firefox

  • FireTray icon

    FireTray

    FireTray is a Linux Mozilla addon that targets Mozilla Firefox, Thunderbird and SeaMonkey. It provides a system tray icon with much window handling functionality. For mail applications, the icon can show the number of unread or new...

    Open Source Windows Linux Thunderbird SeaMonkey ... Firefox

  • Menu Wizard icon

    Menu Wizard

    Customize menus : Helps removing, moving and renaming menus and menu items New feature: Now you can change or disable any of used keyboard shortcuts Support: Firefox, Thunderbird and SeaMonkey

    Free Mac Windows Linux Waterfox ... Pale Moon Thunderbird SeaMonkey Firefox

  • Shoptimate icon

    Shoptimate

    Shoptimate.com lets you compares prices of multiple items at once and shows you which item to buy where to save the most. Including shipping costs.

    Free Mac Windows Linux Internet Explorer ... Chrome Safari Opera SeaMonkey Firefox

  • PhotoME icon

    PhotoME

    PhotoME is a powerful tool to show and edit the meta data of image files. Thanks to the well organised layout and intuitive handling, it's possible to analyse and modify Exif and IPTC-NAA data as well as analyse ICC profiles - and...

    Free Windows Internet Explorer Thunderbird Opera ... Flock SeaMonkey Firefox

  • Torrent Tornado icon

    Torrent Tornado

    A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!.

    Free Mac Windows Linux SeaMonkey ... Firefox

  • keyconfig icon

    keyconfig

    keyconfig allows you to change keyboard shortcuts. [Firefox, Thunderbird, SeaMonkey, and any other XULRunner Application]

    Free Mac Windows Linux Thunderbird ... SeaMonkey Firefox

  • WebPG icon

    WebPG

    WebPG is a free, open source suite of tools to bring GnuPG/PGP (gpg, gnupg) to the browser, in an effort to make cryptographic methods usable, safe and accessible to the common man. WebPG encompasses several projects, from the backend...

    Open Source Mac Windows Linux Chrome ... Thunderbird SeaMonkey Chromium Firefox

  • rikaichan

    Rikaichan is a popup Japanese-English/German/French/Russian dictionary tool for Firefox, Thunderbird and Seamonkey.

    Free Windows Thunderbird SeaMonkey Firefox

  • Folderpane Tools icon

    Folderpane Tools

    Folderpane Tools allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.

    Free Mac Windows Linux Thunderbird ... SeaMonkey

    • Discontinued The extension is no longer working and updated.
  • WikiLook icon

    WikiLook

    WikiLook is a Wikipedia & Wiktionary look up. Fast, light, open source tool that define words for you without need to open new tabs or windows.

    Open Source Mac Windows Linux Flock ... SeaMonkey Firefox