Recently Updated Extensions

Subscribe

WebRTC Permissions UI Toggle Requires Restart

A toolbar button for SeaMonkey to bypass the missing WebRTC permissions dialog and temporarily allow media capture.

Not yet rated
9 users
Updated June 23, 2017

Header Tools Lite Requires Restart

Allows to modify the header and the source of messages

Rated 5 out of 5 stars (24)
5,983 users
Updated June 23, 2017

Webmaster SAPE Requires Restart

Toolbar contains a set of functions, which expands the abilities of webmasters and optimizers, when working in the interface of SAPE exchange.

Rated 5 out of 5 stars (168)
5,122 users
Updated June 22, 2017

Web Messenger for WhatsApp™

Web Messenger for WhatsApp™ brings web messenger right into your browser to chat with your friends.

Rated 5 out of 5 stars (7)
20,520 users
Updated June 21, 2017

Toolbar Button for Facebook™

Toolbar Button for Facebook™ lets you visit your favorite Facebook™ quickly and easily by adding a special button to your Toolbar.

Rated 3 out of 5 stars (35)
19,604 users
Updated June 21, 2017

Messenger for Facebook™

Messenger for Facebook™ lets you bring a Messenger right into your browser to chat with your friends.

Rated 5 out of 5 stars (44)
22,392 users
Updated June 21, 2017

YouTube High Definition

YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

Rated 5 out of 5 stars (233)
484,205 users
Updated June 21, 2017

Flagfox

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Rated 5 out of 5 stars (665)
398,622 users
Updated June 21, 2017

HTTPS Everywhere Requires Restart

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 4 out of 5 stars (181)
375,118 users
Updated June 20, 2017

PlayFlash 64bit Requires Restart

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 (16)
9,865 users
Updated June 20, 2017

PlayFlash 32bit Requires Restart

Flash player plugin - unofficial xpi repack for 32bit 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 (19)
10,712 users
Updated June 20, 2017

uBlock Origin

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (1,745)
3,909,576 users
Updated June 20, 2017

YouTube Flash Video Player

YouTube Flash Video Player is a powerful tool that will let you choose Flash video player as default YouTube video player.

Rated 5 out of 5 stars (63)
232,277 users
Updated June 20, 2017

Bluhell Firewall

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (391)
82,567 users
Updated June 20, 2017

Stylish-Custom Requires Restart

custom additions to Stylish extension

Rated 5 out of 5 stars (6)
924 users
Updated June 19, 2017

Save Button for Pinterest

Save images and pages to your Pinterest account quickly and easily with Save Button for Pinterest.

Rated 5 out of 5 stars (21)
74,113 users
Updated June 19, 2017

Reader

Reader is the ultimate Reader tool for Firefox.

Rated 5 out of 5 stars (65)
30,404 users
Updated June 19, 2017

Classic Toolbar Buttons

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.

Beta builds on versions page!

Rated 5 out of 5 stars (133)
34,842 users
Updated June 17, 2017

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (169)
106,267 users
Updated June 17, 2017

fixedzoomthumb Requires Restart

Shows fixed size image when you hover over a thumbnail and it is permanent till we don't hover anywhere on a web page. Press s to save the image directly.Works with many sites including Amazon, Facebook, Flickr, YouTube.

Rated 5 out of 5 stars (2)
3 users
Updated June 17, 2017