Top-Rated Extensions

Subscribe

Open in IE™ Compatible with Firefox 57+

Open links in Internet Explorer

Rated 3 out of 5 stars (7)
3,601 users

Mobile toolkit Requires Restart

A toolbar for Mobile WebDevelopers, lets you quickly validate your code, check renders and find documentation.

Rated 3 out of 5 stars (7)
667 users

Show Quit Warning / Save Tabs Requires Restart

This extension enable show quit warning option. When we want close firefox window with open tabs it show additional button allowing save all opened tabs.

Gdy zamykamy okno przeglądarki pokazuje dodatkowy przycisk pozwalający zapisać otwarte karty.

Rated 3 out of 5 stars (7)
81 users

Firebomb

Firebomb puts an arsenal of fun, stress relieving 8-bit explosives at your fingertips while you browse. You can annihilate, destroy, and explode any persistent bugs or bad designs live on any web page... More firepower than Firebug alone.

Rated 3 out of 5 stars (7)
82 users

Facebook Application Bookmarks Requires Restart

Add bookmarks to your facebook apps/games by one click. Easily access them from Firefox Bookmarks.

Rated 3 out of 5 stars (7)
113 users

TheRealURL Requires Restart

Get URL information: expand short URLs, get title and content type information without visiting the site.

UPDATE, AUG 2013: THIS EXTENSION IS NO LONGER SUPPORTED. The source is open - if you wish to take on the development, you're welcome.

Rated 3 out of 5 stars (7)
240 users

Office 365 Mail Notifier Requires Restart

This extension notifies you when new messages arrive in your Office 365 mailbox.

Rated 3 out of 5 stars (7)
1,025 users

IOS7 New Tab Requires Restart

Bring IOS7 to you Firefox. Based on IOS7, adds quick search, mousewheel to switch pages. Let's experience it.

Rated 3 out of 5 stars (10)
477 users

X-notifier Neo Compatible with Firefox 57+

Notifier for Gmail, Hotmail, Yahoo, AOL and so on

Rated 3 out of 5 stars (26)
907 users

Subtile Requires Restart

Subtile is a highly customizable extension to allow people without mozilla development knowledge to create their own (sub)extension, limited to a menu attached to a toolbar button.

Rated 3 out of 5 stars (13)
6 users

Youtube Downloader (Mp3|Mp4)

Youtube Downloader (Mp3|Mp4) - Multifunctional youtube converter and dovnloader will help you to download video and audio files from youtube in high quality, affordable MP3, MP4 and many other formats for conversion.

Rated 3 out of 5 stars (13)
2,618 users

CSHelper Requires Restart

This extension packages versions of the CamStudio recorder application and the XVID Codec. It is primarily intended to be used with the screen capture feature of the Video DownloadHelper add-on, when on Windows.

Rated 3 out of 5 stars (16)
10,802 users

Vimeo Downloader Compatible with Firefox 57+

Download vimeo videos with a single click

Rated 3 out of 5 stars (19)
5,977 users

FbxRev Downloader Requires Restart

Téléchargez directement depuis la Freebox.

Rated 3 out of 5 stars (15)
358 users

bit.ly preview Requires Restart

With thebit.lyPreview Plugin for Firefox, whenever you hover over abit.lyURL on any web page, we display a tooltip showing the Page Title, Long URL, and any Click Data we have about the page the URL links to. If you hover over another short URL,http:...

Rated 3 out of 5 stars (68)
2 users

Whois Lookup & Hosting & DNS & Site Flags Firefox Requires Restart

IP Whois Lookup & Website Reviews & Rating. Display country flag indicating website location. Alexa and Norton Antivirus Site Adviser. Supported: GoDaddy, NetworkSolutions, Dotster, 1and1, NameCheap, Register, Yahoo, 123-Reg, FatCow, Enom, FastHosts.

Rated 3 out of 5 stars (12)
3,847 users

Heartbleed Notifier

Notifies you of sites affected by the Heartbleed vulnerability via an icon in the location bar using Mozilla's Heartbleed checker service.

Rated 3 out of 5 stars (12)
1,621 users

Convert YouTube to MP3 Requires Restart

YouTube to MP3 Converter Add-on let you convert YouTube Video to MP3 songs directly and hassle-free.

Rated 3 out of 5 stars (9)
635 users

Dormancy

Dormancy 'retires' tabs that have gone unused for a while, freeing up that memory. It then restores the tabs to life when accessed.

EXPERIMENTAL. MAY EAT YOUR SESSION OR DO OTHER BAD THINGS.

Rated 3 out of 5 stars (9)
60 users

Heartbleed-Ext Requires Restart

The Heartbleed SSL vulnerability presents significant concerns for users and major challenges for site operators. Want to be DETECT websites that are vulnerable install this plug-in and GREEN is GOOD, RED is BAD

Rated 3 out of 5 stars (9)
1,832 users