Позволяет управлять плеером vk.com из любой вкладки, используя попап или горячие клавиши.

Allows to manage vk.com music player from any tab using popup or hotkeys.

Adds a stop button to the browser toolbar.

Simply a stop button, otherwise similar to what the browser normally has, but this does not transform to a reload button at the wrong moment.

A free, highly customizable text and code editor for your browser.

Analyze domain dns zone and http status.

A quick way to add links, images, and screenshots to your Dropmark collections.

TextNotes is a note extension with various useful features.

Show a list of open tabs in plain text for easy backup

This disables some infinite scroll scripts such as those from http://www.infinite-scroll.com used by Tumblr.

1）拦截百度广告，包括搜索、贴吧、知道、新闻在内的所有百度产品线。

2）禁止百度统计采集用户访问记录（对所有安装了百度统计代码的网站均可自动屏蔽）。

Adds a button to the address bar that closes the current tab.

Open any video with your favorite Android video player! Thanks to this extension you will be able to open online videos with any native video player like VLC, MxPlayer, etc.

Removes annoying ads and banners from YouTube.

The extension adds the ability to scroll images vertically for the site https://nhentai.net/

The powerful Twitter client for desktop.

Displays the current viewport size when resizing the browser window.

Shows full date/time in email listing and detail headers.

Zawgyi - Unicode Converter

Prevents from autoplay HTML5 video

Direct Screen Sharing Desktop

Shows tabs as thumbnails in sidebar.

Adds a checkbox to the page context menu to toggle colors, set by the website author.

Allows you to copy content from sites with copy-protection.

Do you like to play in racing? Then the game Car Racing is just for you. Excellent game is always in the browser!

A classic paper game on your computer. Destroy all enemy ships!

All favorite game Pacman does not lose its relevance. You can play it right in your browser, even offline.

Show notable forks of Github projects.

Earn bitcoin rewards when you shop online at more than 10K partner websites worldwide.

Open search results in a new tab.
Above FF 61, works with the omnibox/awesomebar AND the dedicated search box.

Manage cookies for any webpage via an stylish popup window

This extension redirects Bing’s searches to DuckduckGo.
NOTE : This is an unofficial extension, not endorsed by DuckduckGo. Find official one here : https://addons.mozilla.org/fr/firefox/user/3946396/