Featured Extensions

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MailtoWebmails Featured

Tool for managing the default action when you click a "mailto:" link. Specializing in sharing details for Webmail services.

Rated 5 out of 5 stars (13)
5,828 users

FoxyProxy Standard Requires Restart Featured

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.

Rated 4 out of 5 stars (367)
265,760 users

Weather Underground (Forecast Plus) Featured

Provides local & long range Weather Forecast using Weather Underground

Rated 4 out of 5 stars (15)
13,741 users

Copy Plain Text 2 Requires Restart Featured

Copies text without formatting

Rated 5 out of 5 stars (74)
43,652 users

Gmail™ Notifier (restartless) Featured

Multiple account (or label) Gmail notifier (without storing passwords)

Rated 4 out of 5 stars (279)
94,758 users

Ecosia — The search engine that plants trees! Featured

Ecosia is a search engine that donates 80% of its surplus income to planting trees. By searching with Ecosia you can help the environment for free.
This extension adds Ecosia.org as the default search engine to your Firefox. Give it a try!

Rated 5 out of 5 stars (143)
171,531 users

Smart HTTPS Featured

Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.

Rated 4 out of 5 stars (26)
37,837 users

Download YouTube Videos as MP4 Featured

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

Rated 4 out of 5 stars (453)
1,076,106 users

YouTube No Buffer (Stop Autoplaying) Featured

A bulletproof approach to prevent YouTube from buffering videos

Rated 4 out of 5 stars (22)
14,547 users

Tab notifier Featured

Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!

Rated 4 out of 5 stars (49)
4,382 users

Private Tab Featured

Adds private tabs.

Rated 5 out of 5 stars (239)
66,392 users

Beyond Australis Featured

Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!

Rated 5 out of 5 stars (329)
39,689 users

CookieKeeper Featured

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (66)
14,857 users

VimFx Featured

Short, Vim-style keyboard shortcuts for browsing and navigation, for a near mouseless experience.

Rated 5 out of 5 stars (181)
19,039 users

Duplicate Tabs Closer Featured

Detects and automatically closes duplicate tabs.

Rated 4 out of 5 stars (49)
7,255 users

Reader Featured

Reader is the ultimate Reader tool for Firefox.

Rated 5 out of 5 stars (68)
34,195 users

Decentraleyes Featured

Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.

Rated 5 out of 5 stars (82)
69,310 users

QR Code Image Generator Featured

Create a QR Code of the selected text or current URL. Use CTRL-SHIFT-Q to quickly see the QR Code. Also possible to create a QR Code from free text within Firefox. Works completely offline! Now with UTF8 support.

Rated 4 out of 5 stars (30)
18,171 users

YouTube Enhancer Plus Requires Restart Featured

Improve your watching experience! Ad Blocker, Autoplay Manager, Auto HD, Auto Replay, Cinema Mode, and more.

Rated 5 out of 5 stars (126)
57,359 users

AdBlocker for YouTube™ Featured

AdBlocker for YouTube™ removes all annoying Ads from YouTube

Rated 4 out of 5 stars (37)
331,367 users