583
Like
uBlock Origin 35 alternatives
All that the now official uBlock does, and actually development toward an even better product. The real uBlock, still delicately developed and improved. really free.
Apps for SeaMonkey with any license
Platforms
Desktop
Mobile
Tablet
Web / Online
Wearable
Browsers
Development
Indie / Classic
Other Platforms
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117 Like
Lightning 36 alternatives
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...
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83 Like
Mozilla Add-ons 3 alternatives
Mozilla Add-ons is the official Mozilla Foundation website to act as a repository for add-ons for Mozilla software, including Mozilla Firefox, Thunderbird , SeaMonkey , and...
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42 Like
Web Developer 3 alternatives Discontinued
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...
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36 Like
Enigmail 19 alternatives
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...
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26 Like
Mozilla Archive Format 22 alternatives
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...
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26 Like
SQLite Manager 15 alternatives
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...
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16 Like
NewsFox 201 alternatives
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...
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16 Like
Chatzilla 49 alternatives
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...
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10 Like
Secure Login 81 alternatives
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...
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7 Like
FireTray 13 alternatives
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...
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7 Like
Restartless Restart 1 alternatives
This 15KB restartless add-on will add a "File" -> "Restart" menu item and a ctrl/cmd + alt + r hotkey to restart Firefox or Seamonkey.
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7 Like
Menu Wizard 3 alternatives
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
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5 Like
Shoptimate 15 alternatives
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.
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4 Like
PhotoME 18 alternatives
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...
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3 Like
Torrent Tornado 39 alternatives
A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!
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2 Like
keyconfig 1 alternatives
keyconfig allows you to change keyboard shortcuts. [Firefox, Thunderbird, SeaMonkey, and any other XULRunner Application]
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1 Like
WebPG 16 alternatives
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...
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1 Like
rikaichan 1 alternatives
Rikaichan is a popup Japanese-English/German/French/Russian dictionary tool for Firefox, Thunderbird and Seamonkey.
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0 Like
Folderpane Tools 1 alternatives Discontinued
Folderpane Tools allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
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0 Like
WikiLook No alternatives
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.
