Nyakooo/ajax-proxy

An extension plugin for Chrome that modifies the response of AJAX requests. 一个修改Ajax请求响应结果的Chrome扩展插件

Open-Source HTTP Interceptor & Mocking Tool

mocker-api that creates mocks for REST APIs. It will be helpful when you try to test your application without the actual REST API server.

Manage browser's requests, include modify the request headers, response headers, response body, redirect requests, cancel requests

A machine-in-the-middle proxy for development, enabling mocking and/or modification of API endpoints

MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.

Powerful friendly HTTP mock server & proxy library

LiveMock is a comprehensive tool for API development and testing, offering mock data, request proxying, and logging, to streamline workflows and track traffic.

rep+ — Burp-style HTTP Repeater for Chrome DevTools with built‑in AI to explain requests and suggest attacks