Newest Extensions


YouTube Video Player Preview No Restart

YouTube Video Player Preview lets you preview YouTube videos when you hover over thumbnails.

Rated 5 out of 5 stars (1)
348 users
Added July 24, 2016

Google Hangouts Web Messenger No Restart

Google Hangouts Web Messenger brings Google Hangouts right into your browser to chat with your friends.

Not yet rated
313 users
Added July 19, 2016

Open With IE + Edge

View links, pages, and bookmarks in IE, Edge or any other browser. Modify any menu, browser name or location. Incognito/private browsing mode is also supported. Works for all Firefox locales/languages.

Not yet rated
9 users
Added July 18, 2016

Stop Watch timer (Sea Monkey) No Restart

Stop Watch timer for Sea Monkey

Not yet rated
1 user
Added June 24, 2016

Tasks Scheduler (Sea Monkey) No Restart

Keep a list of your important todo list in one place.

Not yet rated
1 user
Added June 24, 2016

LookOut (fix version)

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey

Rated 5 out of 5 stars (2)
2,606 users
Added June 24, 2016

Force Safe Search No Restart

Forces safe search on the major search engines.

Not yet rated
13 users
Added June 20, 2016

YouTube Video Player Pop Out No Restart

YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.

Rated 5 out of 5 stars (2)
25,614 users
Added June 19, 2016

AdSidebar No Restart

Live in harmony with ads.

AdSidebar is an alternative to traditional ad blocker extensions that benefits both the user and content creators. Ads are displayed in a sidebar on the right side of the screen.

Not yet rated
8 users
Added June 16, 2016

XingClean No Restart

Der Spam-Filter für Xing! Entfernt störenden Spam aus der Xing-Timeline und den Gruppen.

Not yet rated
4 users
Added June 8, 2016

Google Cache No Restart

Google Cache lets you visit retrieve the web page from Google Web Cache when the site is offline.

Not yet rated
101 users
Added June 8, 2016

Restart Browser

Add browser-restart buttons and browser-restart menus to Firefox and SeaMonkey browsers.

Rated 5 out of 5 stars (1)
434 users
Added June 7, 2016

XDM Hook

XDM integration module for Firefox

Not yet rated
130 users
Added June 4, 2016

No Resource URI Leak No Restart

Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for

Rated 5 out of 5 stars (13)
4,073 users
Added May 30, 2016


JS on/off status bar button

Not yet rated
3 users
Added May 28, 2016

PlayFlash 64bit

Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.

Rated 5 out of 5 stars (2)
146 users
Added May 21, 2016

Simple YouTube MP3 Button No Restart

Adds a small and simple button to YouTube videos that allows you to quickly download the audio of the video as an MP3 file (quality of the MP3 is as high as the video offers) without having to leave the page.

Rated 5 out of 5 stars (11)
13,883 users
Added May 18, 2016

Stop All Ads No Restart

Browse Safely. Optimize Surfing

Not yet rated
157 users
Added May 17, 2016


Tategaki allows vertical writing-mode on mail compose window.

Not yet rated
14 users
Added May 16, 2016

Ad-Aware Ad Block No Restart

Ad-Aware Ad Block improves your browser’s speed and protects your privacy by blocking ads and trackers. It also improves online security by blocking malicious URLs and establishing the most secure connection available.

Rated 3 out of 5 stars (12)
75,180 users
Added May 13, 2016