Tampermonkey is the world's most popular userscript manager.
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
Advanced Eyedropper, Color Picker, Gradient Generator and other colorful goodies...
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.
The Web Developer extension adds various web developer tools to the browser.
Windscribe helps you circumvent censorship, block ads, beacons and trackers on websites you use every day.
Identify technologies on websites
DevTools extension for debugging Vue.js applications.
Violentmonkey provides userscripts support for browsers. It's open source! https://github.com/violentmonkey/violentmonkey
Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!