Share links instantly

Customize and override your new tab page with your own URL or a searchable bookmark browser!
(Restores browser.newtab.url / bookmarksPanel.xul functionality)

Minimalist browser extension to dynamically theme new windows (very cute).
Use to differentiate open windows *or for the aesthetic ☆ ～('▽^人) *.

Limit the number of tabs that can be opened

An extension that saves your place in the page.

Powerful Tab Manager

Move tabs to another window from the right click menu.

All new tabs and popups are closed automatically when Tab Freezer is active for a page.
Close popups/tabs automatically that open from invisible overlays you click on.

A browser add-on to help you find a tab easier

Copy all tab URLs to clipboard

simple, customisable, minimalistic start page for firefox

Create new tab (can do it in temporary container) in Simple Tab Groups extention

Bookmark-based browser start page

Adds a + button to open a new tab

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

Popout is simple extension that allows tabs to be opened in a separate minimal window.

Reload a web page when one of the watched local filesystem items changes.

Makes tabs addressable by ctrl+[1-9] keystrokes

Source: https://github.com/farnoy/addressable-tabs

Addon to replicate the Safari 'Merge All Windows' menu command

Delete all Cookies and Storage For Tab

Deletes all the cookies, local and session storage for the active tab

Change a new tab to you firefox-homepage.

Simple Linkace Bookmarklet integration for firefox. It allows you to bookmark pages you want to keep in the long term. Find the complete list of features here : https://github.com/Kovah/LinkAce .

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

The Whois Checker! IP Checker extension identifies your IP address with just one click, please note it DOES NOT hide or change your IP address. This tool is to be used to check your current IP address.

Open a set of bookmarks as tabs on browser startup by simply selecting a bookmark folder which contains them.

Improve your privacy and browse safer with seven tweaks.

Take down notes 🗒️, save reminders ⏰, paste links 🔗, create checklists ☑️ all using markdown... directly in your New Tab!

Manage My Tabs is an extension that gives the user a quick and simple way to manage their tabs.

Also tries to play links in mpv. Adapted for Windows.
Send videos from Firefox to the mpv player using a toolbar button, context menu or keyboard shortcut (Ctrl+Shift+V).

Requires configuration: https://github.com/eastmarch/ff2mpv

Delay Distraction is meant to help delay procrastination and distraction by making pages load slower. Users can add items with customizable delay times to help them stay on track when working or studying.