Most Popular Extensions

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JSONovich

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

Rated 4 out of 5 stars (38)
7,934 users

TryAgain Requires Restart

TryAgain keeps trying to load a webpage when the server cannot be reached.

Rated 4 out of 5 stars (72)
6,905 users

No need flash plugin on embeded youtube movies

No need flash plugin on embeded youtube movies

Rated 4 out of 5 stars (2)
6,623 users

Vagex Firefox Add-on Requires Restart

View interesting YouTube videos whilst increasing your own viewership at the same time. The app will automatically view other member's YouTube videos in a playlist fashion.
Membership is free, simply run the Viewer and collect credits!

Rated 3 out of 5 stars (7)
6,509 users

Silent Block

Minimum and fast URL blocker.

Rated 5 out of 5 stars (20)
6,498 users

Console² Requires Restart

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Rated 5 out of 5 stars (49)
6,349 users

RememberPass

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 (24)
6,116 users

Dorando keyconfig Requires Restart

A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)

As of version 2016.2, Custom keys (using custom JavaScript) work again!

Rated 5 out of 5 stars (31)
4,903 users

skyZIP™ acceleration and compression Proxy

skyZIP browser extension can reduce satellite data usage by using NYNEX proxy servers to optimize webpages. Data savings are at about 50%

Rated 4 out of 5 stars (41)
4,042 users

Sun Cult Requires Restart

Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...

Rated 5 out of 5 stars (116)
3,890 users

URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (18)
3,541 users

lolifox - Fierr MOD Requires Restart

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

Rated 5 out of 5 stars (26)
3,439 users

Search Engine Security Requires Restart

Protects against Blackhat spam SEO in search engines (Google, Bing & Yahoo).

Rated 4 out of 5 stars (11)
3,071 users

Cloud Viewer

Open various types of files in Google Docs Viewer

Rated 4 out of 5 stars (48)
2,877 users

GitHub Extension Installer

Install Browser Extensions straight from GitHub Repositories

Rated 5 out of 5 stars (17)
2,716 users

AVIM Requires Restart

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

Rated 5 out of 5 stars (34)
2,592 users

X-notifier lite (for Gmail, Hotmail, Yahoo)

Notifier for Gmail, Hotmail, Yahoo mail.

Rated 4 out of 5 stars (27)
2,425 users

MathML-fonts

Fonts for Mozilla's MathML engine.

Rated 5 out of 5 stars (1)
2,314 users

Delete Cookies on Exit

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 (6)
2,166 users

GuifiProxy Requires Restart

Simple proxy manager
- Change proxy with two clicks
- Import and export proxies lists
- Manually add, delete and edit proxies
- Automatic authentication on proxies (bypass popup with login and password)
- Proxysel replacement

Rated 4 out of 5 stars (23)
2,110 users