To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!

Close

Welcome to Firefox Add-ons.

Choose from thousands of extra features and styles to make Firefox your own.

Close

On the go?

Check out our Mobile Add-ons site.

Close

Games & Entertainment

Subscribe

Galaxytoolbar Requires Restart

A Firefox extension for the OGame Galaxytool to keep it up-to-date.

Rated 4 out of 5 stars (15)
1 user
Updated Sept. 29, 2016

Download Now

YouTube Anywhere Player

Watch videos anywhere in cinema mode without leaving the website you're on.

Rated 5 out of 5 stars (64)
6 users
Updated Aug. 13, 2016

Download Now

Answers Questions Requires Restart

Adds to browser simple answers questions scripts generator.

Not yet rated
1 user
Updated Aug. 25, 2015

Download Now

Snic

Smart Near-Infrared Control.

Not yet rated
1 user
Updated July 25, 2015

Download Now

Yahtzee Requires Restart

Yahtzee

Rated 4 out of 5 stars (3)
0 users
Updated Jan. 23, 2015

Download Now

HTML5 Loop Requires Restart

Loop HTML5 Video and Music.

Rated 2 out of 5 stars (16)
0 users
Updated Nov. 17, 2014

Download Now

WOT Play Replay Requires Restart

Данное приложение расширяет возможности сайта wotreplays.ru

Rated 3 out of 5 stars (2)
1 user
Updated Jan. 29, 2014

Download for Windows

Anaglyph 3D Requires Restart

Convert image to 3d image (anaglyph).

Rated 4 out of 5 stars (8)
1 user
Updated Jan. 3, 2014

Download Now

Super Mario Cross Requires Restart

The legendary arcade game that has survived the ages and can still be found today in modern arcades. You may have played this game when you were a kid and want to have a bit of fun remembering what it was like.

Not yet rated
1 user
Updated Aug. 23, 2013

Download Now

Play drums! Requires Restart

Just… play drums with your keyboard!

Rated 4 out of 5 stars (20)
0 users
Updated April 1, 2012

Download Now

Gfire WebGame Detection Plugin Requires Restart

This extension tells Xfire and Gfire about the webgame you currently play.

Rated 4 out of 5 stars (1)
1 user
Updated Jan. 11, 2012

Download Now

JSW:O Alert Requires Restart

Receive alerts for "Jet Set Willy: Online" hosted games

Rated 5 out of 5 stars (2)
0 users
Updated Sept. 28, 2011

Download Now

FlashResizer Requires Restart

Makes Flash Movies/Games Resizable, and other enhancements.

Rated 4 out of 5 stars (30)
3 users
Updated May 3, 2011

Download Now

中止ボタンがバッテン髪飾りに見えて困る Requires Restart

中止ボタンがバッテン髪飾りに見えて困る

Rated 4 out of 5 stars (5)
0 users
Updated Feb. 13, 2011

Download Now