Featured Extensions

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Google Translate Anywhere No Restart Featured

Dictionary (Google Translate) Anywhere provides access to a floating multilingual Google Translate panel on any webpage.

Rated 4 out of 5 stars (27)
11,069 users

Fox Web Security Featured

Protection from adult content (parental control) and from dangerous sites.
Entrust protection for yourself and your children to professionals!

Rated 5 out of 5 stars (18)
28,021 users

Pearltrees No Restart Featured

Pearltrees lets you organize all your interests.

Rated 5 out of 5 stars (245)
19,321 users

Video Resumer No Restart Featured

Automatically resumes YouTube videos from where you played them last. Without this extension, for example, when you click through YouTube videos, back and forth, they always start from the beginning.

Rated 4 out of 5 stars (56)
15,784 users

NoScript Security Suite Featured

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Rated 5 out of 5 stars (1,579)
2,141,577 users

DownThemAll! Featured

The first and only download manager/accelerator built inside Firefox!

Rated 4 out of 5 stars (1,753)
1,303,685 users

Keyword Search No Restart Featured

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (85)
10,073 users

Lightweight Themes Manager No Restart Featured

Manage your installed personas (lightweight themes).

Rated 5 out of 5 stars (9)
13,462 users

Tab Mix Plus Featured

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.

Rated 4 out of 5 stars (2,599)
841,596 users

Smart HTTPS No Restart 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 (18)
19,785 users

Tab Scope Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (469)
132,461 users

Mind the Time No Restart Featured

Keep track of how much time you spend on the web, and where you spend it. A toolbar ticker shows the time spent at the current site or the total time spent on the web today. A summary page sums up data for the past 70 days, 10 weeks, and 6 months.

Rated 4 out of 5 stars (91)
14,664 users

Master Password+ Featured

Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows

Rated 4 out of 5 stars (128)
24,282 users

HTTPS Everywhere Featured

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 (81)
194,903 users

Copy As Plain Text Featured

Removes formatting from copied text.

Rated 4 out of 5 stars (59)
22,317 users

Thumbnail Zoom Plus Featured

Shows full image when you hover over a thumbnail. Works with Amazon, Baidu Images, Bing Images, Facebook, Flickr, Google+, Google Images, IMDb, LinkedIn, Netflix, Pinterest, Reddit, Twitter, Yandex, YouTube, Wikipedia, Yahoo Images, & many more.

Rated 4 out of 5 stars (353)
114,128 users

Add to Search Bar No Restart Featured

Make any pages' search functionality available in the Search Bar (or "search box")...

Rated 5 out of 5 stars (638)
79,847 users

Privacy Settings No Restart Featured

Alter Firefox's built-in privacy settings easily with a toolbar panel.

Rated 5 out of 5 stars (42)
17,041 users

Video Downloader Prime No Restart Featured

Easily download most popular video formats.

Rated 4 out of 5 stars (26)
50,707 users

Tamper Data Featured

Use tamperdata to view and modify HTTP/HTTPS headers and post parameters...

Rated 4 out of 5 stars (138)
113,608 users