Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
356,262 个用户
automaticDark - Time-Based Theme Changer
Automatically change Firefox's theme based on the time.
6,622 个用户
Measure-it
Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.
28,221 个用户
AdBlock 广告过滤器 版
最受欢迎的 Chrome 和 Safari 广告拦截工具，现在也支持 Firefox 啦！ 可以拦截所有网页上的所有广告，以及 Facebook、YouTube 和 Hulu 上的广告。 还可以让您的浏览器变得更快！ 大部分广告根本就不会被下载，节约您的时间和带宽。
1,217,923 个用户
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
51,121 个用户
Steam URL Opener
Allows you to open URLs inside Steam Client to save the hassle of logging in normal browser (with a single click on a button).
4,841 个用户
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
443,428 个用户
YouTube NonStop
Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autoclicks it, so you can listen to your favorite music uninterrupted. Working on YouTube and YouTube Music!
132,734 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
64,927 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。
561,129 个用户
1Password: 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.
336,831 个用户
