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Enabling active mode on this add-on prevents duplicate tabs from being opened. Enabling passive mode on this add-on allows you to view the duplicate tabs in the popup UI and close the ones you don't want.

Mute newly created tabs

Automatically close tabs that have been ignored for too long. Free yourself of digital clutter.

An easy-to-use and lite timer, stopwatch, and alarm for your browser.

Cleans up duplicate tabs automatically.

Do you use multiple monitors? This extension will force new windows into one of them.

Preview links by dragging them, search selected text by dragging, and provides secure, unrestricted, modification-free cross-origin access.

Adds a "Close Other Tabs" item to the tab context menu

URL Alias allows the user to define a short alias for a url, in order to access websites faster from the address bar.

A sensible, configurable, no-nonsense image viewer. Controls: * Right+Left click any image to activate the viewer. * Mousewheel to zoom. * Left mouse drag to pan. * Middle click to switch scaling modes. See options page for configuration.

Opens multiple pages with continuous numbering in the URL

Allows changing to a different tab by pressing Ctrl and a number at the same time. Primarily useful on Linux, where the default is Alt+number. Partial replacement for my Windows Shortcuts extension for Firefox 55 and above.

3G Proxy provides you with access to mobile internet (3G/4G) which is offered by mobile carriers worldwide. Our SIM cards are directly hosted in the country where you would like to test your product.

Choose any color and get a unique browser theme. More than 3 million colors to choose from!

Microsoft Copilot, ChatGPT, and Google Gemini is now available as a sidebar for Firefox

Automatically redirects matching webpages to alternate destinations.

Tab Master 5K replaces your New Tab page with a full-featured tabs, history, bookmarks, and sessions manager.

A simple text editor to help you focus on your writing.

Go forward and back active tab history with Alt+,(comma) and Alt+.(period)

This extension will allow you to use existing Facepunch links in search results/old links.

When you want to hide something, but don't want to open a private window.

Quick access to WhatsApp Web from your browser with additional features.