Securely edit, fax and sign PDF and Word documents for free. Fill forms. Merge documents and reorder pages. Create templates.

CK-12 is an app to help students, and teachers improve K-12 learning globally by providing self-pace learning content & tools.

Neat dark themes for the most popular websites

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

This extension sets your search engine to Ecosia and customizes your new tab page so you can plant trees with every search.

Keep your searches private by redirecting searches that may be tracked to Hide My Searches, a privacy-focused search engine.

Keep your searches private by redirecting searches that may be tracked to Search Encrypt, a privacy-focused search engine.

The web developers helper program to create and test custom HTTP requests.

Create recovery media for your Chromebook.

Fast, one-click access to millions of research papers.

Makes JSON easy to read. Open source.

轻轻点击，即可为您朗读页面上的文本。（现正支援超过 40 种以上语言）

透过观赏外语电影与电视剧，愉快且有效地自学新的语言

The most beautiful and customizable JSON/JSONP highlighter that your eyes have ever seen. Open source at https://goo.gl/fmphc7

Sea Foam是一款支持谷歌浏览器用户使用的海水泡沫高清壁纸主题插件，它拥有超过70万的用户数和近满分的高评价，是您的主题不二之选。

Keyword search volume, cpc and competition for 15+ websites like Google™ Search Console, YouTube™, Amazon™ & more

Adds features and notifiers made by WebGL3D to the Roblox website

Browser Extension for YouTube Creators

Improving Steam. Items auto-selling. Lowest prices for games and items. Prices from different sources. And a lot more

Download photos and videos from Instagram™ quickly and easily! Supported Stories download! Supported mass download in one click!

Internet-Start will replace your current search and transform the results for your search query into convenient format.

The easiest way to identify fonts on web pages.

Makes YouTube stream H.264 videos instead of VP8/VP9 videos

Auto-refresh and auto-reload pages after any number of seconds.

Smart PDF converter which definitely will make your life easy.

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

Play your downloaded videos on the Chromecast™ (any file type)

The easiest way to identify fonts on web pages.

The BioDigital Human is a 3D platform that simplifies the understanding of anatomy, disease and treatments. Explore the body in 3D!

Smart. Simple. Beautiful Theme.