给浏览器加点机能。
为 Firefox 增添功能，让上网变得更快、更智能，乐趣十足。
YouTube Video and Audio Downloader (WebEx)
Download YouTube videos in all available formats and extract the original audio files
179,392 个用户
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
134,868 个用户
User-Agent Switcher and Manager
Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
63,951 个用户
Decentraleyes
保护您免受集中式的内容交付网络（CDN）的跟踪。它可以拦截许多种链向 CDN 的请求，转而指向本地提供的文件，从而防止网站功能受损。辅助常规的内容过滤规则。
246,262 个用户
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.
936,524 个用户
NoScript 安全套件
您在网络浏览器中得到的最安全的保护！ 只允许在您信任的站点运行动态内容，保护您不受 XSS 点击劫持的攻击，并免遭“幽灵”、“熔断”等 JavaScript 漏洞利用风险。 在用 Firefox 52？https://noscript.net/getit
1,672,345 个用户
LastPass Password Manager
LastPass是一款让您的上网浏览更便捷更安全的免费在线密码管理器和表单过滤器。LastPass以插件的形式支持IE和Firefox（Opera, Safari, Chrome, iPhone,Opera 通过书签小工具形式支持），它允许您从任何主流的密码存储器导入和导出密码，捕获其它管理器无法捕获的密码包括很多AJAX表单。它也允许您轻松地创建强大的密码。您的敏感信息在上传之前已在本地计算机上加密，因此就算是LastPass的员工也无法得到密码信息。一次性密码和屏幕键盘帮助保护您的主密码。
959,550 个用户
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
92,508 个用户
1Password X – Password Manager
The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.
73,311 个用户
