擴充套件就像是在瀏覽器中安裝外掛。
它們為 Firefox 新增功能，讓上網變得更快、更聰明，或更好玩。
FoxClocks
FoxClocks shows times around the world - or just your local time - at the bottom of your browser. It deals with daylight saving time so you don't have to.
25,222 位使用者
Image Search Options
Image Search Options provides a set of highly customizable reverse image search context menu options.
45,360 位使用者
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
86,997 位使用者
Decentraleyes
保護您不受「免費」、中心化的內容傳遞網路（CDN）的追蹤。此附加元件可防止您的瀏覽器送出請求到 Google Hosted Libraries 這類的服務，並在本機提供程式庫以達到相同的效果，而不造成網頁錯誤。可補充一般內容封鎖器的功能。
182,098 位使用者
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
616,901 位使用者
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.
199,494 位使用者
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
2,650,072 位使用者
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
616,901 位使用者
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
86,997 位使用者
Myki Password Manager & Authenticator
Offline P2P encrypted password manager & authenticator. Auto-fill Two-Factor Authentication (2FA) tokens.
2,149 位使用者
