YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
159,965 人のユーザー
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
112,643 人のユーザー
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
79,026 人のユーザー
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
44,383 人のユーザー
Dictionary Anywhere
View definitions easily as you browse the web. Double-click any word to view its definition in a small pop-up bubble. It also supports Spanish, German, French language alongside English. Enjoy Reading Uninterrupted!!!.
37,235 人のユーザー
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
32,327 人のユーザー
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
19,072 人のユーザー
Link Gopher
Extracts all links from web page, sorts them, removes duplicates, and displays them in a new tab for inspection or copy and paste into other systems.
16,280 人のユーザー
Default Bookmark Folder
Allows you to choose the default bookmark location folder and quickly bookmark pages via a dedicated icon.
12,084 人のユーザー
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
10,699 人のユーザー
Simple Gesture for Android
シンプルなタッチジェスチャー機能を追加します。(Android用) ※「Quick Gestures」というアドオンを大変参考にさせていただきました
2,004 人のユーザー
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
171,412 人のユーザー
iCloud ブックマーク
Firefox 用の iCloud ブックマーク拡張機能を使用して、Windows 上の Firefox のブックマークを iPhone、iPad、および Mac 上の Safari のブックマークと同期してください。
140,866 人のユーザー
