Up & Coming Extensions

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CryptoData Requires Restart

Easily and quickly to encrypt / decrypt:
Private messages via e-mail, blogs, social networks, forums, websites, images, etc
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (7)
2,099 users

ClassLink OneClick Extension

ClassLink provides secure and simple single sign-on access to all your apps, files and classes from anywhere.

Not yet rated
2,788 users

LottaDeals

Spar dich reich ✔ Rabatte, Gutscheine, Coupons und Aktionen für über 5.500 Online-Shops!

Rated 5 out of 5 stars (8)
12,838 users

YouTube without DASH Playback (fully buffer)

Turn off DASH support from HTML5 video element. Enabling the extension causes YouTube (and other HTML5 video players) to fully load video files.

Rated 4 out of 5 stars (5)
1,552 users

Windows Favorites

Use Windows and Internet Explorer Favorites on Firefox without syncing or importing on Windows, Linux, and Mac OS X.

Rated 3 out of 5 stars (15)
1,108 users

Custom User-Agent String

Set custom User-Agent string. Also available for Firefox on Android.

Rated 3 out of 5 stars (9)
26,021 users

Add-ons Manager Context Menu Requires Restart Featured

Add more items to Add-ons Manager context menu.

Rated 5 out of 5 stars (37)
24,555 users

Picture Blocker

Block/Allow images by pressing user-defined hotkeys or a toggle button.

Rated 4 out of 5 stars (8)
12,744 users

VK Music Downloader

Качалка музыки из vk.

Rated 4 out of 5 stars (74)
43,565 users

signTextJS plus

window.crypto.signText replacement plus enhancements

Not yet rated
2,018 users

Simple Site Blocker Requires Restart

A simple site blocker with whitelist features.

Rated 3 out of 5 stars (14)
30,567 users

Scroll to Top/Bottom Requires Restart

Add a user interface for jumping to the top or bottom of the current page.

Rated 5 out of 5 stars (25)
2,220 users

Dolus

Hide your IP from websites with spoofed X-Forwarded-For headers.

Rated 4 out of 5 stars (11)
2,314 users

iMacros for Firefox Featured

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Rated 4 out of 5 stars (420)
550,481 users

Flem Requires Restart

Flem is a tiny Firefox toolbar extension designed for Web-Explorers. You can load and manage your URLs file lists into the toolbar and navigate from one URL to another very easylee. You can also use Flem as an url slideshow.

Rated 5 out of 5 stars (16)
4,585 users

Remote XUL Manager

Manages the Remote XUL whitelist to allow websites and local files to load XUL content. For versions compatible with Firefox 41 and lower, see All Versions page below.

Rated 5 out of 5 stars (36)
96,993 users

TabSubmit

Lets the user direct the submission of a form to a new tab or window. [Bug #17754]

Rated 5 out of 5 stars (14)
1,860 users

译库网页翻译——旗舰版

译库网页翻译是一款由中译语通科技(北京)有限公司开发的针对网页进行翻译的浏览器工具。 一键秒翻,轻松浏览外文网站。

Rated 3 out of 5 stars (1)
1,292 users

Auto Form Requires Restart

Copy/Paste all fields from a web form in one click.

Rated 3 out of 5 stars (16)
15,811 users

All Menus Button

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (6)
2,483 users