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.
158,956 users
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!)
31,694 users
Tabby - Window & Tab Manager
Tabby helps you manage a lot of windows and tabs easily; it can help you open, close, move, pin, and do many other things on tabs and windows quickly. With Tabby, you can even save all you windows and tabs for later with just one click!
8,384 users
Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
136,829 users
To Google Translate
Right-click a section of text and click the Translate icon next to it to text translate or listen to it in your language.
1,102,234 users
TWP - Translate Web Pages
Translate your page in real time using Google or Yandex. It is not necessary to open new tabs. Now works with the NoScript Extension.
656,960 users
Simple Translate
Quickly translate selected or typed text on web pages. Supports Google Translate and DeepL API.
289,684 users
ImTranslator: Translator, Dictionary, TTS
COMPLETELY REDESIGNED TRANSLATOR FOR FIREFOX ImTranslator translates text, words, webpages between more than 100 languages. NEW: Inline Translator, Dictionary, access to Google Translate, Microsoft Translator. Unique on the fly localization.
145,762 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
1,982,964 users
Easy Youtube Video Downloader Express
A simple extension for superfast and easy YouTube downloads in FLV, 3GP, MP3, MP4, 720p, and 1080p formats.
596,580 users
Turbo Download Manager
A download manager with the ability to pause and resume downloads, download remote files, and more.
65,498 users
uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
7,386,035 users
AdBlocker Ultimate
Completely remove ALL ads. No “acceptable” ads or whitelisted advertisers allowed. This free extensions also helps block trackers and malware.
2,344,907 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
1,038,680 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
314,994 users