Tampermonkey is the world's most popular userscript manager.
415 222 users
FireShot makes full page screen captures - http://bit.ly/RlBQMV Screenshots are quickly captured and: ― Saved as Image / PDF with links and text * ― Sent to clipboard ― Printed ― Annotated * ― Uploaded * ― E-Mailed * * OS Windows only
161 763 users
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
149 717 users
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the "⚛️ Components" or "⚛️ Profiler" tab.
129 970 users
The Web Developer extension adds various web developer tools to the browser.
121 853 users
Identify technologies on websites
89 337 users
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
86 684 users
DevTools extension for debugging Vue.js applications.
84 189 users
Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.
73 756 users
★ Used by Several Million users on different platforms ★ 1) Screen capture web pages 2) Selected regions 3) Whole browser window 4) Slack upload Edit screenshots. Save images as local files or Google Drive. Tools for Annotation. Upload and share
64 483 users
Download PDF files directly from Scopus!
60 847 users