List of Firefox extensions

• Google Earth – provides full integration of Google Earth into the browser.
• Google Toolbar – provides features related to Google Search as a toolbar.

• Universal Edit Button – notifies user when a web page contains editable content.

• Automatik Text Reader – a multi-language text-to-speech extension.
• Cooliris – a tool for browsing photos and videos from the web or a desktop.
• Flashblock – until 2013, the tool used to prevent downloaded Flash content from displaying unless explicitly started (clicked) or whitelisted.
• Hyperwords – allows users to select text and perform rich commands, such as instant Wikipedia look-ups, in-page translations, conversions, etc.
• Lightbeam – displays third party tracking cookies placed on the user's computer while visiting various websites with graph.
• Pentadactyl and Vimperator – make Firefox feel and behave like the Vim text editor.
• SponsorBlock - blocks sponsorship segments in YouTube videos.
• Turn Off the Lights – is used to obscure or mask content other than a running video.
• Zotero – enables users to collect, manage, and cite research from all types of sources from the browser.

• ScrapBook – adds enhanced scrapbooking, page saving, bookmarking, and notetaking functionality.
• Xmarks Sync – adds online bookmark and password synchronization, as well as bookmark tagging and suggested sites.

• Greasemonkey – allows users to install user scripts that modify specific web pages
• iMacros – a macro recorder for the Firefox web browser.
• Stylish – allows the user to install custom CSS that can modify specific web pages and XUL application interfaces.

• DownThemAll! – a download manager and accelerator.
• Video DownloadHelper – used to download videos from sites like YouTube or Metacafe.

• Morning Coffee – a news displayer.
• Operator – parses microformats.
• Sage – a lightweight feed reader extension.

• Tong Wen Tang – converts Chinese-language web pages between Traditional and Simplified Chinese characters.

• Adblock – blocking ads and filtering content via a paired blacklist and whitelist.
• Adblock Plus – blocking ads and filtering content via a paired blacklist and whitelist.
• Decentraleyes – serves common content delivery networks and web libraries locally.
• Disconnect,[1] DoNotTrackMe, and Ghostery – advertisement networks and spy cookies blocking; forks of AdBlock Plus
• GNU LibreJS – (part of GNU IceCat browser), detects and blocks non-free and non-trivial JavaScript.
• HTTPS Everywhere – automatically switches to HTTP Secure whenever possible.
• LastPass, 1Password, Bitwarden – password management, portability and security.
• NoScript – allows users to control JavaScript and other potentially executable content.
• Privacy Badger – blocks canvas fingerprinting and blocks advertisements and tracking cookies that do not respect the Do Not Track setting in a user's web browser.
• uBlock Origin – blocking ads and filtering content via a paired blacklist and whitelist.
• Ninja Cookie – removes cookie banners by rejecting the use of non-essential cookies.

Some extensions mentioned in other categories at this page (such as AdBlock/AdBlock Plus) will also increase security.[2] Also, Tor, Torbutton, and Torlauncher aren't mentioned as they are not simply extensions for Firefox but instead only work on modified Firefox versions[3] Besides these add-ons, changing settings in Firefox Preferences and in about:config also will help with privacy and security.

• Showcase – shows tabs as thumbnails, to preview, manage and search across them.
• Tab Mix Plus – provides tabbed browsing enhancements.

• Alexa Toolbar – provides access to SEO data.
• ColorZilla – adds an eye dropper (color reader), color palettes, page zooming, and displays element information.
• Firebug – allows the debugging, editing, and modifying of any website's CSS, HTML, DOM, and JavaScript, and provides other web development tools.
• FireFTP – is a cross-platform FTP client which provides access to FTP servers.
• Web Developer – adds a menu and a toolbar to the browser with various web developer tools.