Best Addon Eats Mozilla Addons Alternatives

Firefox 3 lets you tag your bookmarks, but it doesn't give you a great way to browse your bookmarks by their tags. TagSifter tries to. Select a group of tags in the sidebar or menu, and TagSifter shows you all the related tags and bookmarks. Or search your bookmarks with set operators, like 'tag1 - (tag2 + !tag3)'. Comes with a tool to help tag your existing bookmarks as you move to Firefox 3.

Принудительный вызов HTML5 плеера ВКонтакте даже при наличии Adobe Flash (можно отключить это поведение в настройках аддона).
Force load of HTML5 video player of vk.com even when Abode Flash is avaliable.

Adds a minimize button to a restyled addon bar.

The development of this addon is currently suspended. In the meantime, you can give a try to Puzzle Toolbars for an updated experience compatible with Australis.

Cleanup your Addon Manager

This addon adds an 'Update' menu entry to the bookmark context menu, that will change this bookmark's destination URL to the currently opened page.

This addon will help you to search in open tabs. Sometimes it can save a lot of time.

GutscheinXXL.com ist die Webseite für Gutscheine, Rabatte, Schnäppchen und mehr. Verpassen Sie nie wieder eine Aktion mit unserem Firefox Addon.

AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.

ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!

Disable the addon compatibility check window (and optionally the first run page) when switching between different channels of Firefox.

This is an example addon demonstrating the strictCompatibility opt-in option.

This addon changes the backgroundcolor on 9gag.com from white to black (nightmode). It also changes some font colors from black to white.
This is a personal addon which is not official from 9gag.com.

Create a QR code (generated via the Google Charts API) from the current tab's URL or selected text. It is useful for quickly opening a webpage on a mobile device, for example.

The Muditanist addon lights up when you're looking at a site that welcomes contributors and new contributions.

文字列選択でWeblioから検索。
オン、オフの切り替えは右下のアイコン又はアドオンの設定より変更できます。
インストール直後のみ、表示してるページをリロードするまで動かないバグがあります。

[1.1] TextInput Formでは反応しない様、仕様を変更しました。
[1.1] 英単語のみを検索の設定を追加。
http://ejje.weblio.jp/

This addon helps people to read the pages using Atomic chillu characters by converting them to Unicode 5.0 standard

Send the title and the current url to Tweetbot (Mac OSX)
(Tweetbot software required)

Bring back the List-all-tabs button (Removed from Firefox 12 in Bug 714281)

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.