The Web Developer extension adds various web developer tools to the browser.
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.
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.
YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
http://yslow.org is the official open source website.
This extension allows you to execute common commands using mouse gestures, rocker navigation, scroll wheel navigation and page...
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.
はてなブックマーク用の公式 Firefox アドオンです。はてなブックマーク (http://b.hatena.ne.jp/) は株式会社はてなが提供する、日本国内最大のソーシャル・ブックマークサービスです。会社で見つけたサイトをオンラインにブックマーク、家に帰ってゆっくり見たいというニーズに応えると同時に、ブックマークを他のユーザーと共有し、これまでにない新しい情報体験を提供します。
Collections are groups of related add-ons that anyone can create and share.Explore Collections