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.
156,578 个用户
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.
105,976 个用户
Google Search Fixer
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome.
104,608 个用户
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!)
44,842 个用户
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
32,908 个用户
Popup Blocker Ultimate
Best Pop-up Blocker for Firefox. (Best in Rating, Performance, This addon does NOT collect user's data same as Poper Blocker)If your Firefox version is not 57+ please install version 8.1 from Official website.
58,656 个用户
Cookie Quick Manager
An addon to manage cookies (view, search, create, edit, remove, backup, restore, protect from deletion and much more). Firefox 57+ is supported.
53,774 个用户
JavaScript Toggle On and Off (WebExtension)
Toggle JavaScript engine on and off the easy way
12,922 个用户
Impulse Blocker
Block distracting websites. Just list the sites you want Impulse Blocker to pause or completely avoid.
12,883 个用户
Substital
Add subtitles to any video or movie online. Be it on Netflix, Disney+, Youtube or any other online streaming platform.
10,361 个用户
