List of Extensions (Mon Jun 17 2024):

Copy image as Base64 1.0
Allows you to copy an image to clipboard in Base64 format in the right-click menu.

Tab Manager Plus for Firefox 5.2.0
Quickly find open tabs, see all windows in one view, find duplicates and limit tabs per window. The best Tab Manager for Firefox.
https://stefanxo.com

UMiBO 2.4.2
Turns your new tab into a virtual desktop to manage bookmarks.
http://zarch.fr

Profile Switcher for Firefox 1.3.1
Create, manage and switch between browser profiles seamlessly.
https://github.com/null-dev/firefox-profile-switcher

Ambient Mode Blocker 1.0
Ambient Mode Blocker automatically turns off Ambient mode on Youtube in the background.

Old Reddit Redirect 1.8.1
Ensure Reddit always loads the old design
https://github.com/tom-james-watson/old-reddit-redirect

Go to Sound Tab 0.0.1
Takes you to the tab that is generating sound

Redirect YouTube Shorts to YouTube 1.0
Redirect YouTube Shorts to YouTube

Save Page WE 28.11
Save a complete web page (as curently displayed) as a single HTML file that can be opened in any browser.

Print Edit WE 29.6
Edit web pages prior to printing. Delete, hide and format elements. Edit text. Remove adverts and sidebars.

Tile Tabs WE 15.5
Take tabs from parent windows and arrange them in layouts of tiled sub-windows.

Zoom Page WE 19.13
Zoom web pages (either per-site or per-tab) using full-page zoom, text-only zoom, automatic fit-to-width and minimum font size.

Containers On The Go 1.17
Open new tabs in new containers. The containers are automatically removed when the tabs are closed.

I still don't care about cookies 1.1.4
Community version of the popular extension "I don't care about cookies" https://github.com/OhMyGuus/I-Dont-Care-About-Cookies
https://github.com/OhMyGuus/I-Dont-Care-About-Cookies

Don't Accept image/webp 0.9
Strip image/webp from Accept: headers, which should discourage servers from replacing JPEG and PNG images with WebP images.
https://github.com/jscher2000/dont-accept-webp

Shortkeys (Custom Keyboard Shortcuts) 4.0.2
Custom keyboard shortcuts for your browser
https://github.com/mikecrittenden/shortkeys

Undo Close Tab 8.0.0
Reopens the last closed tab.
https://github.com/M-Reimer/undoclosetab

Add-on List-o-matic 9000 1.5
Helps create a list of all add-ons.

Instance Assistant for Lemmy & Kbin 1.2.6
Simplify your Lemmy & Kbin experience with tools for your instance and communities
https://github.com/cynber/lemmy-instance-assistant

Close Tabs to the Right 1.2.4
Add a context menu to tabs menus that closes all tabs to the right of the selected tab.
https://github.com/mkopec/close-tabs-to-the-right

Cookie AutoDelete 3.8.2
Control your cookies! Automatically delete unwanted cookies from your closed tabs while keeping the ones you want.
https://github.com/Cookie-AutoDelete/Cookie-AutoDelete

Firefox Multi-Account Containers 8.1.3
Multi-Account Containers helps you keep all the parts of your online life contained in different tabs. Custom labels and colour-coded tabs help keep different activities — like online shopping, travel planning, or checking work email — separate.
https://github.com/mozilla/multi-account-containers#readme

Cookie Manager 1.7
An efficient cookie manager. View, edit, delete and search for cookies. Designed for privacy aware users. Automatically opens the Cookie Manager upon extension startup (this can be configured via the UI).
https://github.com/Rob--W/cookie-manager

Cookie Quick Manager 0.5rc2
An addon to manage (view, search, create, edit, delete, backup, restore) cookies.
https://github.com/ysard/cookie-quick-manager

Extension source viewer 1.7.0
View source code of Firefox addons and Chrome extensions (crx/nex/xpi) from addons.mozilla.org, the Chrome Webstore and elsewhere.
https://github.com/Rob--W/crxviewer

Bring back Youtube Download 1.5
A neat little extension with a simple UI and a powerful function: downloading Youtube Videos.

Video Downloader for reddit - Redditsave 2.0
A powerful reddit video downloader with sound powered by redditsave.com
https://redditsave.com

Spoof Geolocation 0.1.1
This extension alters browser Geolocation latitude and longitude to user-defined values
https://webextension.org/listing/spoof-geolocation.html

LoadTabOnSelect3 1.2023.812.0
Load backgrounded tabs on selection. Prevent background tabs from loading content until the tabs are activated.

Bookmark Tab Here 1.0.1
Adds context menu item 'Bookmark Tab Here' to Bookmarks Menus as an alternative bookmarking method.

DownThemAll! 4.12.1
The Mass Downloader for your browser
https://downthemall.org/

Switch To Previous Active Tab 2.5
Flips to the last accessed tab in the same window, or in any window.
https://github.com/jscher2000/switch-to-previous-active-tab

Window Merger 0.6.0
Options to merge browser windows into one
https://vanderven.se/martijn/

Select After Closing Current 5.3
Configure which tab to select after closing the current tab.

Return YouTube Dislike 3.0.0.14
Returns ability to see dislikes

YouTube Comment Search 2.5.0
Extension for searching youtube video comments.
https://github.com/pancevac/ytsc-extension

ScrollAnywhere 9.2
Drag scrollbar with your middle mouse button anywhere on the page. Supports also "grab and drag" style.
https://fastaddons.com/

Form History Control (II) 2.5.8.0
Manage form history entries (search, view, edit, cleanup, export/import) and easy formfiller.
https://stephanmahieu.github.io/fhc-home/

Tabs to Bookmark Groups 0.2b1
(Disabled)
Save the tabs to a bookmark group and switch between different groups.

TWP - Translate Web Pages 10.0.1.1
Translate your page in real time using Google or Yandex.
https://github.com/FilipePS/Traduzir-paginas-web

Panorama View 0.9.7
(Disabled)
Easily group and organize tabs visually
https://github.com/photodiode/panorama-view

Select Tabs 3.0.0
Select multiple tabs: same site, duplicates, descendants, to the left, to the right, seen today, seen yesterday... and many more.

Copy/Paste and Save tabs list 1.8.5
Allow to copy every tab opened and paste a list of tab to open

ShareX 2.1.0
Adds 'Upload with ShareX' button to image, video, audio and text selection context menu.
https://getsharex.com

Bypass Paywalls Clean 3.6.1.0
(Disabled)
Bypass Paywalls of news sites
https://gitlab.com/magnolia1234/bypass-paywalls-firefox-clean

QR Code 1.3
Adds a button to the address bar to get the current url as a qr code

Copy Tabs 1.15.42
Copy Tabs as hyperlinks or text URLs with or without parameters
https://github.com/igorlogius/copy-tabs

Bypass Paywalls Clean (D) 3.6.1.0
Bypass Paywalls of news sites
https://gitlab.com/magnolia1234/bypass-paywalls-firefox-clean

CanvasBlocker 1.10.1
Alters some JS APIs to prevent fingerprinting.
https://github.com/kkapsner/CanvasBlocker/

Gesturefy 3.2.12
Navigate, operate, and browse faster with mouse gestures! A customizable mouse gesture add-on with a variety of different commands.
https://github.com/Robbendebiene/Gesturefy

Tabs Aside 3.6.0
Set your tabs aside and store them in your bookmarks.
https://github.com/tim-we/tabs-aside

Augmented Steam 3.1.1
Augments your Steam Experience
https://augmentedsteam.com/

URLs List 0.6.0
List the URLs of all tabs from the current window as copyable plaintext.
https://github.com/moritz-h/urls-list

Merge Windows 1.0.3resigned1
Merge multiple windows together
https://github.com/jonathanKingston/merge-windows

DelugeAddTorrent 1.1.4resigned1
Send the magnet link to download.
https://github.com/muriloportugal/DelugeAddTorrent

Order Tabs by Domain 0.2.4resigned1
Tabs ordered by domain, as god intended.
https://github.com/doriantaylor/w3x-taborder

Tab List Button 1.4resigned1
When you have lots of tabs open, it is good to have another way of selecting one.
https://codefisher.org/toolbar_button/

Drag-Select Link Text 1.5.5resigned1
Select link text with easy mouse gestures.
https://github.com/nkestrel/dragselectlinktext

Stop All Button 1.5resigned1
Stop all tabs from loading when you have mass opened tabs and found the one you really wanted.
https://codefisher.org/toolbar_button/

Tab Kraken 0.2.5
Helps sort your tabs

Close Duplicate Tabs 1.0.23
Shows the total amount of duplicate tabs and allows to quickly and easily close them - Same URLs in different containers are not treated as duplicates
https://github.com/igorlogius

Reddit Enhancement Suite 5.24.6
A suite of modules that enhance your Reddit browsing experience
https://redditenhancementsuite.com

YouTube Enhancer 1.25.0
YouTube Enhancer is a simple extension that adds some useful features to YouTube.
https://github.com/YouTube-Enhancer/extension

'Improve YouTube!' 🎧 (for YouTube & Videos) 4.937
(Disabled)
YouTube, tidy + smart? Youtube video youtube player size youtube color ad skip speed volume channel skipper tags playlist hide
https://github.com/code4charity/YouTube-Extension/

uBlock Origin 1.58.0
Finally, an efficient blocker. Easy on CPU and memory.
https://github.com/gorhill/uBlock#ublock-origin

Gather from Tabs 1.1.15
Gather information from multiple tabs using javascript
https://github.com/igorlogius/gather-from-tabs

Dark Reader 4.9.86
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
https://darkreader.org/

Import URLs 1.0.12
Import URLs from clipboard or a text file as tabs or bookmarks
https://github.com/igorlogius/import-urls

Disable YouTube Seek by Number 1.3
Disables the YouTube 0-9, Home and End keyboard shortcuts which seek to different times on a video

Tab Session Manager 7.0.1
Save and restore the state of windows and tabs. It also supports automatic saving.
https://tab-session-manager.sienori.com/

SponsorBlock for YouTube - Skip Sponsorships 5.6.1
Skip sponsorships, subscription begging and more on YouTube videos. Report sponsors on videos you watch to save others' time.
https://sponsor.ajay.app

uBlacklist 8.7.1
Blocks sites you specify from appearing in Google search results
https://iorate.github.io/ublacklist/

Add-ons Search Detection 2.0.0