Automatically Pause or Stop YouTube™ Videos from Playing.

A simple proxy management tool. HTTP, HTTPS, SOCKS4 and SOCKS5 proxies are supported.
Firefox >= 57.0 required.

Simple extension letting you uncheck all checkboxes on a page.

Add a context menu item contains only bookmarklets from bookmarks.

With this extension, bookmarklets can make cross-origin requests, write to the clipboard, communicate with addons, etc.

NEVER use untrusted bookmarklet!

Adds a shuffle button next to your tabs. Switches to a random tab when clicked.

Finds and closes duplicate tabs by URL. Will assume that URLs in different contextual identities are not the same URL and will not be closed.

Yet, just another json content viewer plugin for Firefox.

Before using, you should go to the "about:config" page and toggle the "devtools.jsonview.enabled" to false first.

A free & easy-to-use word editor extension for your browser.

Save tab groups and switch between them.

Removes the stupid Twitter view counters added by Musk.

Cambridge English Dictionary search tool

Allows basic operations on open tabs, such as copying the URLs to the clipboard, saving the tab list to a file, and reloading saved tabs from a pasted list or from a text file.

Easy access on ArXiv! Rename the title to the paper's title. Add a button to navigate easily. Download PDF with meaningful filename.

Your new automatic currency converter.
Completely customizable.
Completly free.

This extension plugin will count the organic Google search results.

Adds a reload button to the browser toolbar. This is meant to accompany the stop button extension, so that they together provide separate stop and reload buttons, instead of the standard combined button.

Fast change between dark and light YouTube design. Just in one click.

Automatically hides YouTube playback controls while paused.

Works on fullscreen videos and allows the user to change the delay.

Kill Ads and Slide-Ins

Makes a cross-hair the default cursor. To disable just click 'disable'. This addon is designed to be very light and have very little impact on your web browser. Crosshairify changes the cursor style.

Many screen readers like JAWS or NVDA have shortcuts to bring up a list of
landmarks, headings or links. This browser extension provides the same
functionality without requiring a screen reader. Just press Ctrl+Shift+7.

Highlight lists, count cards, organise them with headers and separators

Renders an isometric pixel view of GitHub contribution graphs.

View & extract any zip file via an easy-to-use UI!

Adds a button which can be clicked to make "fixed" elements (that is, headers/footers/sidebars that stay stuck to one part of the window) disappear, opening up more space to view the page content.

Close tab by left-click-immediately-followed-by-right-click (previously: double-right-click) anywhere on the page. Inspired by "Rights To Close" legacy extension for Mozilla Firefox.

Sync containers across multiple devices. Please note that firefox sync is mandatory for the sync to work properly.

Search and highlight keywords in any page via toolbar popup.

Solve math equations in the address bar by typing 'math', then an empty space, then an equation like '(3^2 + 4^2)^(1/2)' and the answer will appear in the drop down menu.

Browse tabs later.
Usage:
1. Click the bookmark icon in the right of address bar to save current tab.
2. Repeat first step to some tabs you want browse it later.
3. Click the bookmark icon on the toolbar restore your saved tabs.