PostMessage Listener

rep+

rep+ - Capture, modify, and replay HTTP requests in Chrome DevTools with AI-powered security analysis. rep+ is a powerful Chrome DevTools extension that brings Burp Suite Repeater functionality directly into your browser. Now enhanced with AI, it helps developers, security researchers, and bug bounty hunters test and analyze HTTP requests smarter and faster—no proxy setup required. With rep+ you can: - Capture and replay HTTP requests from any tab, without proxy setup - Group, filter, block, and search requests using text or regex - Convert data inline (Base64, URL encode/decode, JWT decode, Hex/UTF‑8) - Inspect responses in multiple formats with syntax highlighting and line numbers - Passively extract hidden endpoints from JavaScript - Discover query, body, header, and path parameters with risk classification and confidence scoring - Suppress false positives by ignoring common frameworks, libraries, telemetry, and generic fields - Detect secrets in JavaScript using high‑coverage Kingfisher rules - Export endpoints, parameters, and secrets to CSV or Postman - Search deeply inside responses and JavaScript - Run built‑in automated attacks (Sniper, Battering Ram, Pitchfork, Cluster Bomb) - Use AI for request explanations and attack suggestions via API or local LLM (Ollama) - AI‑powered request analysis, modification, and attack suggestions - Per‑request isolated chat with cross‑request references - One‑click AI‑driven request edits with visual feedback - Local or API‑based LLM support with aggressive token optimization - Automatically remove duplicate requests during capture to eliminate noise and keep only unique traffic Why install it? - Works natively inside your browser - Designed for speed, clarity, and real pentesting workflows - Helps you uncover security issues and understand application behaviour faster - Ideal for bug bounty hunters, red teamers, AppSec, and curious devs

postMessageObserver

A Chrome extension that allows you to observe the flow of postMessage messages on the side panel. Chrome PostMessage Observer provides a convenient side panel to view postMessages for the current page. This extension offers a user-friendly UI that simplifies the debugging and observation of message flows between iframes and the top window. Easily intercept and analyze postMessage messages, view their payload, source, and target details, and efficiently troubleshoot communication issues within web applications. Contributions are welcome to the GitHub project, which can be found here: https://github.com/yishiashia/chrome-postmessage-observer

WebSocket DevTools

Professional WebSocket debugging tool with message proxying, simulation, blocking and favorites features 🔍 Real-time Monitoring - Track WebSocket connections and messages with live updates 🔄 Background Monitoring - Continuously monitor WebSocket connections even when DevTools panel is closed 🎮 Message Simulation - Send custom messages in both directions (Client ↔ Server) 🚧 Traffic Control - Block messages and simulate network issues for testing 💾 Favorites System - Save and organize frequently used messages 🌍 Multi-language - Full English and Chinese support 🎨 DevTools Integration - Native Chrome DevTools panel experience 🖼️ Iframe Support - Full WebSocket proxy support for iframe embedded connections Transform your WebSocket debugging experience with professional-grade tools designed for developers. HOME PAGE https://websocket-devtools.com

PixiJS Devtools

Debug games and apps written with PixiJS Unofficial PixiJS chrome extension. Features: * Show the scene graph * View and edit properties * Double-click in the outliner to console.log a node * Outline the active node in the viewport. * The active node is available in the developer console as `$pixi` * Right-click in the viewport to activate a node