Programming - Firefox add-ons

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.

Customize the way a web page displays or behaves, by using small bits of JavaScript.

The Web Developer extension adds various web developer tools to the browser.

DevTools extension for debugging Vue.js applications.

DevTools for Redux with actions history, undo and replay.

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

A replacement for the Java Plugin so Java Applets without graphics continue to work on browsers that no longer support NPAPI plugins. Java's LiveConnect API is emulated — data & method calls can be exchanged, and Java can manipulate the webpage DOM.

A firefox addon allowing the user to enable CORS everywhere by altering http responses. Report issues to the repository, with enough information to reproduce the problem: https://github.com/spenibus/cors-everywhere-firefox-addon/issues

View JSON documents in the browser.

This extension is very useful for PHP developers that are using PHP tools with Xdebug support like PHPStorm, Eclipse with PDT, Netbeans and MacGDBp or any other Xdebug compatible profiling tool like KCacheGrind, WinCacheGrind or Webgrind.

Fast JSON viewer - highlights, shows items count/size, handles large files

Easily add (Access-Control-Allow-Origin: *) rule to the response header.

Add, modify or remove a header for any request on desired domains.

A REST client for almost any web service.

A mobile devtools for debugging web sites and applications with the console, DOM, network info, sources, and more.

GraphQL debugging tools for Apollo Client.

Displays markdown documents beautified in your browser.

No more CORS error by appending 'Access-Control-Allow-Origin: *' header to local and remote web requests when enabled

Capture requests from any website within Firefox and send them to Postman App

Live Reload feature for Dynamic content (PHP, Node.js, ASPNET - Whatever, it doesn't matter). This extension is for Live Server - VSCode Extension (required v3.0.0+).

Clone and open projects from GitHub, GitLab, Gitee, and Bitbucket in JetBrains IDEs right from your browser

Open-source Ui.Vision is RPA software for task & test automation. It is 3 tools in 1: Visual BROWSER automation with Selenium IDE import/export, 2: Visual DESKTOP automation and 3: (optional) Prompting with integrated Anthropic Claude Computer Use

Plugin to get the elements xPath.

Scanning website for vulnerable js libraries.

A simple yet powerful CSS property viewer. For Firefox Quantum