Up & Coming Extensions

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RequestPolicy Sync No Restart

Sync engine for RequestPolicy.

Rated 5 out of 5 stars (3)
1,319 users

QuickDrag

Extends the function of the drag-and-drop mouse gesture so that it can be used to load URLs, do a web search of selected text on a page, or save an image on a page. The successor to Super DragAndGo.

Rated 4 out of 5 stars (314)
44,258 users

Element Inspector No Restart

Shift-RightClick any element to open it in DOM Inspector.

Rated 5 out of 5 stars (23)
2,428 users

Facebook Messenger

Facebook Messenger lets you bring a Facebook Messenger right into your browser to chat with your friends.

Rated 5 out of 5 stars (22)
22,598 users

GNotifier No Restart

Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.

Rated 5 out of 5 stars (36)
11,019 users

HTitle

Hide title bar if window is maximized.

This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).

Rated 5 out of 5 stars (81)
6,515 users

TryAgain

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

Rated 4 out of 5 stars (64)
7,451 users

Awesome Auto Archive No Restart

Automatically do Archive/Copy/Delete/Move actions based on user defined rules

Rated 4 out of 5 stars (17)
4,101 users

Fierr

Replaces the error page with a more stylish appearance with additional features.

Rated 5 out of 5 stars (50)
4,022 users

Y U no validate

In the "Add Security Exception" dialog makes "Permanently store this exception" checkbox unchecked by default.

Previously known as XULernia. New name seems to be less misleading.

Rated 5 out of 5 stars (4)
4,438 users

CookieKeeper No Restart

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (34)
12,381 users

Browser View Plus (PlayLink)

Open links, pages, and bookmarks in any other browser or media player. Modify any menu, browser name or location. Incognito/private browsing mode is also supported.

Rated 5 out of 5 stars (16)
1,505 users

JSONovich No Restart

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

Rated 4 out of 5 stars (30)
9,036 users

Stop Tube HTML5 No Restart

Stops autoplay of YouTube HTML5 videos (WebM). It is Flash-Block equivalent for HTML5 videos.

Rated 4 out of 5 stars (41)
7,037 users

AutoCopy 2

Copies selected text to the clipboard automatically.

Rated 5 out of 5 stars (56)
18,203 users

Open Multiple Locations

Adds a "File" menu option to open multiple locations at a time.

Rated 4 out of 5 stars (17)
3,928 users

Join-NG

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (2)
1,522 users

LookOut+

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 4 out of 5 stars (2)
1,163 users

NetVideoHunter - YouTube Video Downloader

This add-on is a downloader that lets you easily download MP4 videos and MP3 music from sites like Youtube, Facebook, Metacafe, Dailymotion, Break, VKontakte and music for example from SoundCloud, Grooveshark and from many other sites...

Rated 4 out of 5 stars (345)
300,345 users

Awesome ldapInfoShow No Restart

Show contact photo and other info from Local Dir, Addressbook, LDAP, Facebook, LinkedIn, Flickr, Gravatar etc

Rated 4 out of 5 stars (9)
1,327 users