by mrtius

33 Add-ons in this Collection

Video DownloadHelper by mig

Rated 4 out of 5 stars 5,854 reviews

4,552,311 users

The easy way to download and convert Web videos from hundreds of YouTube-like sites.

Web of Trust, WOT: Website Reputation Ratings by WOT Services

Rated 3 out of 5 stars 1,648 reviews

1,012,755 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs so you can decide whether to visit a site:
• Green – The site is trusted
• Yellow – Be cautious
• Red – Online threats detected

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,548 reviews

856,813 users

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.

ImTranslator - Google Translator, Dictionary, TTS by Smart Link Corporation

Rated 4 out of 5 stars 429 reviews

323,515 users

ImTranslator provides translation powered by Google Translate, Microsoft, Babylon for 70+ languages. It includes Translator, Dictionary, Text-to-Speech, Back Translation.
Video Tutorial:

Flagfox by Dave G

Rated 5 out of 5 stars 636 reviews

573,644 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Xmarks Sync by Xmarks Inc.

Rated 4 out of 5 stars 2,527 reviews

298,099 users

Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!

All-in-One Sidebar by Ingo Wennemaring

Rated 5 out of 5 stars 1,392 reviews

199,907 users

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Fast Dial by telega

Download Now


Rated 3 out of 5 stars 2,464 reviews

134,843 users

Visual bookmarks for Firefox. (Works with all latest versions of Firefox)

FEBE by Chuck_Baker

Rated 4 out of 5 stars 644 reviews

119,037 users

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

BugMeNot by retailmenot

Rated 4 out of 5 stars 217 reviews

37,478 users

Bypass compulsory web registration with the context menu via

Integrated Inbox for Gmail and Google Apps by MichaelAtUVa, LEVEL4, others

Rated 5 out of 5 stars 266 reviews

15,557 users

Tired of having multiple tabs open just to view your favorite Google services and other Apps like Feedly, Evernote, Twitter and more? Now you can see them right from your Gmail Inbox.

Install now or visit for more info.

Resurrect Pages by Anthony Lieuallen

Rated 5 out of 5 stars 62 reviews

23,811 users

Dead pages, broken links, the scourge of the internet. Powerhouse sites like Slashdot and Digg can bring a server to its knees. What do we do when a page is dead but we still want to see it? Call in the clerics, and perform a resurrection...

SkipScreen -- download helper, now for sale... by Skipscreen

Rated 4 out of 5 stars 632 reviews

111,899 users

We’re sorry to say we can’t maintain Skipscreen anymore. We’d love to see someone carry on with it. If you’d like to buy Skipscreen, or otherwise find it a good home, please contact us at

FoxTab by The FoxTab Team

Download Now


Rated 4 out of 5 stars 1,622 reviews

62,999 users

3D in your browser! FoxTab brings innovative 3D functionality to your Firefox.

New! Top Sites for FoxTab (aka Speed Dial).

Gmail Manager by Todd Long

Download Now


Rated 4 out of 5 stars 1,345 reviews

105,023 users

The original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
  1. 1
  2. 2
  3. 3
Results 115 of 33

What are Collections?

Collections are groups of related add-ons that anyone can create and share.

Explore Collections

Recently Viewed