The world's most popular userscript manager

Boost reading and writing confidence across all types of content and devices, in class, at work, and at home!

The fastest and safest web browsing experience.

Quickly create & join Skype meetings

Create shapes and diagrams

Capture a screenshot of your current page in entirety and reliably—without requesting any extra permissions!

Userscript support for Chromium based browsers like Opera and Chrome.

Work outside the perimeter

Easily create mathematical equations, formulas and quizzes. Intuitively type or handwrite, with no tricky math code to learn.

捕捉网页截图，编辑并将它们保存为PDF，JPEG，GIF，PNG或BMP；上传，打印，在Photoshop中打开，复制到剪贴板或电子邮件

Adds React debugging tools to the Chrome Developer Tools. Created from revision 82762bea5 on 3/10/2022.

Replace new tab page with a personal dashboard featuring to-do, weather, and inspiration.

使用Evernote扩展程序一键保存精彩网页内容到Evernote帐户。

Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies

Perform everyday tasks related to PDF - merge, convert, download

Check for better prices on Amazon while browsing ebay & other online stores

Helps your teacher maintain a great learning environment.

Experience PDFs in a whole new way with Texthelp’s new PDF Reader.

Speed up, slow down, advance and rewind HTML5 audio/video with shortcuts

Download Videos from the Web

冻结暂时用不到的标签页，以便释放系统资源。

Video speed controls - change playback speed while watching videos online.

Enhance your Roblox experience!

The Facebook Pixel Helper is a troubleshooting tool that helps you validate your pixel implementation.

Take a Speedtest directly from your toolbar to quickly test your internet performance without interruption.

Make it possible to open by click a link to a local file that is disabled by Chrome.

Input Tools lets you type in the language of your choice.

以最简单有效的方式拦截令人厌恶的弹出窗口、弹出式广告和弹出覆盖内容的最佳扩展。无干扰地浏览所有网站。

ContentKeeper Authenticator

Fast-forward, rewind, adjust playback speed on any video