Featured Add-ons for Seamonkey

by Mozilla

14 Add-ons in this Collection

Adblock Plus by Eyeo

Rated 5 out of 5 stars 7,511 reviews

12,127,715 users

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).

NoScript Security Suite by Giorgio Maone

Rated 4 out of 5 stars 2,619 reviews

1,026,985 users

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, "Spectre", "Meltdown" and other JavaScript exploits.
Fx52? https://noscript.net/getit

Lightning by Mozilla Calendar Project

Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 4 out of 5 stars 2,816 reviews

645,489 users

The first and only download manager/accelerator built inside Firefox!

Enigmail by Patrick Brunschwig

Rated 4 out of 5 stars 210 reviews

136,810 users

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 871 reviews

316,378 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

ReminderFox by Tom Mutdosch, Daniel Lee

Rated 4 out of 5 stars 531 reviews

39,450 users

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

NewsFox by Andrey Gromyko, R Pruitt

Rated 4 out of 5 stars 237 reviews

22,244 users

NewsFox is an efficient 3-pane(email) style Atom/RSS feed reader.

StumbleUpon by StumbleUpon

Rated 4 out of 5 stars 229 reviews

25,312 users

StumbleUpon is the easiest way to discover new and interesting photos, videos, web pages and more, recommended by a community of experts. Tell us what you are interested in and we recommend page after page of amazing stuff you’d never expect to see.

xSidebar by Philip Chee

Rated 4 out of 5 stars 12 reviews

27 users

Firefox style sidebars for SeaMonkey...

Classic Firefox theme for SeaMonkey by artam

Rated 4 out of 5 stars 19 reviews

137 users

Firefox based theme for SeaMonkey 2.x

ScribeFire Classic by mdrouin, Scribefire

Rated 4 out of 5 stars 166 reviews

694 users

ScribeFire Classic is a blog editor that integrates with Firefox and lets you easily post to your blog.

ScribeFire Classic is no longer supported; you should install ScribeFire Next: https://addons.mozilla.org/en-US/firefox/addon/scribefire-next

Kilome by kilometk

Rated 4 out of 5 stars 9 reviews

4 users

Kilome A Seamonkey Theme

Better Gmail 2 by Gina Trapani

Rated 4 out of 5 stars 516 reviews

3,394 users

Add useful extra features to Gmail, like hierarchical labels, an unread message icon on your browser tab, file attachment icons, and more.

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