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VKontakte.ru Downloader (music/videos/photos @ VK) Requires Restart

Download music, videos and photos from VK.com / vkontakte.ru. One-click download, natural filenames, displaying file size and bitrate for music, downloading HD video, downloading HQ photos. No spam, no usage of your account, no spyware.

Rated 4 out of 5 stars (499)
3,583 weekly downloads

Gmail Manager Requires Restart

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.

Rated 4 out of 5 stars (1,154)
707 weekly downloads

Webmaster SAPE Requires Restart

Toolbar contains a set of functions, which expands the abilities of webmasters and optimizers, when working in the interface of SAPE exchange.

Rated 5 out of 5 stars (160)
294 weekly downloads

Yahoo! Mail Notifier Requires Restart

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

Rated 3 out of 5 stars (157)
216 weekly downloads

FoxGame Requires Restart

Enhance user experience with OGame.

Rated 5 out of 5 stars (32)
175 weekly downloads

GitHub Extension Installer

Install Browser Extensions straight from GitHub Repositories

Rated 4 out of 5 stars (23)
168 weekly downloads

ALLYouTubeDownloader Requires Restart

ALLYouTubeDownloader extention (FLV/MP4/WebM; HD/HQ). Windows only. Works only with ALL YouTube Downloader 2.3 application or higher (versions 2.2 and lower doesn't work anymore).
Homepage: http://www.allplayer.org/youtube-to-allplayer

Rated 3 out of 5 stars (8)
147 weekly downloads

Zindus Requires Restart

Google and Zimbra contact sync for Thunderbird. (TB 24 and above NOT supported)

Rated 4 out of 5 stars (199)
124 weekly downloads

Forecastbar Enhanced Requires Restart

Note from Mozilla: This add-on has been discontinued. Try Forecastfox Weather instead.

Get international weather and weather forecasts with Forecastbar Enhanced.

Rated 4 out of 5 stars (151)
116 weekly downloads

YouTube Videos Download in one click Requires Restart

Download YouTube videos by clicking a button underneath videos in YouTube. Save YouTube videos and songs in 1080p (HD) MP4 or FLV format.

Rated 2 out of 5 stars (18)
111 weekly downloads

Galaxytoolbar Requires Restart

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

Rated 4 out of 5 stars (15)
98 weekly downloads

Orkut Toolbar Requires Restart

Orkut Toolbar helps you to format the text of your posts in the Orkut forums, easily access all common functions of orkut, create and manage custom signatures and insert and view images and flash movies in orkut posts and scraps.

Rated 3 out of 5 stars (29)
72 weekly downloads

ConQuery Requires Restart

Context searching for everyone and URL manipulation tool for advanced users...

Rated 5 out of 5 stars (36)
71 weekly downloads

Youtube Downloader Gold

This extension to download audio and video from popular video hosting YouTube. To download the available formats mp4, webm, mp4a, mp3.

Rated 2 out of 5 stars (1)
41 weekly downloads

DSLR Notifier 2

Updated version of the original DSLR Notifier, created by Ryan Flint, which enables members of Dsl/Broadbandreports.com to keep tabs on their instant messages and updated...

Rated 5 out of 5 stars (9)
23 weekly downloads

IP Flager

Shows country flag for the website in the location bar.

Rated 5 out of 5 stars (4)
21 weekly downloads

WOT Play Replay Requires Restart

Данное приложение расширяет возможности сайта wotreplays.ru

Rated 3 out of 5 stars (2)
16 weekly downloads

AMO Browsing for SeaMonkey

This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.

Rated 5 out of 5 stars (3)
16 weekly downloads

log2stas LiveJournal Add-on Requires Restart

a) Auto-expand comments threads b) Copy a fragment of text or link to a picture to LJ editor from other pages. c) Simplify use of lj-cut d) Allow quickly switch between anonymous and normal browsing.

Rated 4 out of 5 stars (6)
15 weekly downloads

Video Pinner

Pins a YouTube video to the page so that it is always visible while you scroll and read comments. Port of Chrome's Video Pinner extension

Rated 3 out of 5 stars (4)
14 weekly downloads