Dark New Tab
Open a blank dark or white tab rather than the default browser's new tab page.
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Switch To Previous Active Tab & Reload All Tabs
Activate the last accessed tab in the same window, or any window. Right-click the toolbar button for a most recent tabs list (MRU) and options. Adds "Reload All Tabs" to the tab right-click context menu. (For Fx115/Fx128, use "See all versions".)
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Tab Workspaces
Organize your tabs into workspaces. Switch between workspaces to change which tabs are displayed at the moment.
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The Tab Suspender
Suspends inactive tabs after a set time by replacing them with a custom suspended page.
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Doodle Jump
The green alien needs your help to jump higher! The famous Doodle Jump game is available in your browser.
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Insight - Track Your Time Online
Know how you spend your time online. Insight by Freedom tracks the time you spend on websites, so you can improve your habits.
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Pin Unpin Tab
Pin Unpin Tab can pin or unpin a tab by: - a long left mouse click anywhere on the webpage (an arguably more efficient alternative to the no longer possible double-click on tab) - a keyboard shortcut - a click on the pin icon on browser toolbar
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Twitch Error AutoRefresher
This extension will automatically refresh twitch stream whenever any error occurs.
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Container Tab Groups
プライベートで独立したコンテナーを使ってChromeみたいなタブグループを実現：Firefoxのための究極のタブ・マネージャーおよびグループ。
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Tabs Backup & Restore
Keep manual or automatic backups of all tabs*, and restore on demand. Can also export backup file to disk to restore later, or to another profile, even on another computer or OS, as long as it has Tabs Backup & Restore installed. *(See description)
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Volume Booster Ultra
Amplify any tab's audio up to 1000% with crystal-clear sound Upto 600%, smooth volume transitions, and intuitive one-click controls.
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Simple Proxy Switcher
A simple add-on to quickly switch your proxy servers Currently only supports http/s proxy
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Intention - Stop Mindless Browsing
Automatically pause distracting websites so you can scroll less and do more. Say goodbye to mindless browsing.
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Mute YouTube ads
Mutes any www.youtube.com tab when it detects video ads on it. Unmutes the tab when the ads are gone. Backs out on tabs where you manually change the muted state of the tab.
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Custom New Tabs
Load any URL you want when a new tab is opened. CNT is the only add-on to place the focus intelligently on the chosen web page (like a search engine's search box) or in the URL bar!
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Window Merger
Merge specified browser windows into each other. Or all of them into one. Simply right click to open Firefox’s context menu when multiple windows are open, or configure a keyboard shortcut. All wrapped up in one tiny free extension.
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