Top Extensions and Apps for Programming

Adds React debugging tools to the Chrome Developer Tools. Created from revision 3cde211b0c on 10/20/2025.
Makes JSON easy to read
DevTools browser extension for Vue.js
Everything can be scripted, allowing your browser to do more!
Lighthouse is an open-source, automated tool for improving the performance, quality, and correctness of your web apps.
The extension changes default search provider
影刀Chrome自动化插件
AI-powered browser agent by Merlin
Validate and view JSON documents
Modify HTTP request headers, response headers, and redirect URLs
Cast movies, videos & screen mirror games to Chromecast, Roku, Xbox, Smart TV!
Playground where you create your own nbots on and hide chasing spawn trend memes
Game-based learning using creativity, collaboration, and problem-solving.
Planet Free VPN - The best Fast Unlimited and Secure VPN Without Logs
A lightweight browser. Fast, small size, with ad blocker & video download
Terminal emulator and Linux environment.
It’s time for you to take control of the PJ Masks’ epic adventures!
Faster Switch To iPhone 17 Or Any Android Device. No Data Loss.
AI Agent, Chatbot, Deep Research, Image Generator, Math Solve, Writing Assistant
Measuring tape, AR Ruler, distance measure, Floor plan, Scan Home design, ARCore
Support Flash content in Microsoft Edge
Change the web at will with userscripts
Add-on for enabling web automation. This web extension is compatible with Power Automate for desktop version 2.27 or later.
Everything can be scripted, allowing your browser to do more!
Adds React debugging tools to the Microsoft Edge Developer Tools. Created from revision 3cde211b0c on 10/20/2025.
Modify HTTP request headers, response headers, and redirect URLs
Expands your browser automation capabilities from Studio desktop.
Play Flash anytime, even in 2026 and beyond, using an emulator.
Browser DevTools extension for debugging Vue.js applications.
© Thales Group 2026
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
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.
Userscript support for browsers, open source.
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
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.