Extensions by Weekly Downloads

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Extension Auto-Installer No Restart

Extension Auto-Installer is a helper for Firefox/SeaMonkey/Thunderbird extension developers: it allows automatically adding or updating browser extensions, e.g. via command line tools. This makes testing your changes easier.

Rated 5 out of 5 stars (12)
1,116 weekly downloads

wmlbrowser

Simulate WAP browsing by viewing WML (Wireless Markup Language) pages.

Rated 4 out of 5 stars (28)
1,053 weekly downloads

Disable Add-on Compatibility Checks No Restart

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Rated 4 out of 5 stars (89)
896 weekly downloads

URLFilter No Restart

Block advertisement and access to adult sites

Rated 4 out of 5 stars (13)
832 weekly downloads

AutoPager

AutoPager automatically loads next pages when you reach the end of a page. It works on a ton of sites,Google,Yahoo..
It works well with most other add-ons adblock plus, WOT and most of the greasemonkey scripts.
You can also try AutoPagerLite.

Rated 4 out of 5 stars (394)
734 weekly downloads

WhatsApp Helper No Restart

Useful for WhatsApp.

Rated 1 out of 5 stars (4)
703 weekly downloads

JSONovich No Restart

Pretty-prints JSON content in the browser for easy, unobtrusive viewing.

Rated 4 out of 5 stars (30)
686 weekly downloads

Click-to-Play Manager No Restart

Manages the Click-to-Play domain whitelist.

Rated 5 out of 5 stars (9)
607 weekly downloads

lolifox - Fierr MOD

Replaces the error page with a lolifox appearance with additional features.

Rated 5 out of 5 stars (13)
533 weekly downloads

Network Preferences Add-on No Restart

Network Preferences add-on for Firefox for Android

Rated 3 out of 5 stars (7)
529 weekly downloads

Delete Cookies on Exit No Restart

Deletes all cookies when Firefox Mobile is closed, preventing sites and web trackers from persisting data across browsing sessions and improving user privacy. This add-on is NOT for Firefox Desktop, which have this feature built-in.

Rated 4 out of 5 stars (5)
486 weekly downloads

X-notifier lite (for Gmail, Hotmail, Yahoo) No Restart

Notifier for Gmail, Hotmail, Yahoo mail.

Rated 3 out of 5 stars (22)
478 weekly downloads

Shareaholic | share with Google, Facebook and more

Shareaholic is the easiest way to share interesting links using Facebook, Twitter, Google Mail, Reader, Bookmarks, Evernote, Bitly, StumbleUpon, and more... from one simple ALL-IN-ONE add-on. This is the ultimate tool for the link sharing addict!

Rated 4 out of 5 stars (256)
468 weekly downloads

GitHub Extension Installer No Restart

Install Browser Extensions straight from GitHub Repositories

Rated 5 out of 5 stars (6)
459 weekly downloads

RememberPass No Restart

RememberPass is a Firefox/Firefox Mobile Addon to force browser to remember password even website disable it by default. It's done by set autocomplete to "on" where it's off.
Here is: Test Page

Rated 4 out of 5 stars (18)
455 weekly downloads

elevenia

Instant access to your online shopping paradise. The more transaction you've made from our extension, the more point-cashback you'll get!

Rated 5 out of 5 stars (1)
445 weekly downloads

TabsInForeground No Restart

Always open Tabs in foreground. Use system back button to close again.

Rated 5 out of 5 stars (12)
400 weekly downloads

AutoAuth

AutoAuth automatically submits HTTP authentication dialogs when you’ve chosen to have the browser save your login information.

Rated 4 out of 5 stars (47)
393 weekly downloads

AVIM

An input method editor (IME) for Vietnamese. Type Vietnamese diacritics directly into any Web page, Web app, or dialog box.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, và hộp thoại.

Rated 5 out of 5 stars (30)
371 weekly downloads

KaiRo.at Mandelbrot

Mandelbrot browser, based on high school final thesis work of Robert Kaiser, but completely rewritten

Rated 4 out of 5 stars (1)
359 weekly downloads