Test Automation Made Simple

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

A tool for mocking HTTP services

Stub your network requests easily! Test your apps with fake network data and custom response time, response code and headers!

MockServer enables easy mocking of any system you integrate with via HTTP or HTTPS with clients written in Java, JavaScript and Ruby. MockServer also includes a proxy that introspects all proxied traffic including encrypted SSL traffic and supports Port Forwarding, Web Proxying (i.e. HTTP proxy), HTTPS Tunneling Proxying (using HTTP CONNECT) and…

Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

Java client for Kubernetes & OpenShift

Local-first Developer Tool to Build, Test, Intercept & Mock API Requests. Requestly is a combination of REST API Client and HTTP Interceptor. It is simple, beautiful and powerful alternative to Postman, Insomnia, Bruno and Charles Proxy.

Sharingan（写轮眼）是一个基于golang的流量录制回放工具，适合项目重构、回归测试等。

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation sandbox project 🚀

WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on the functionality from http://WireMock.org, but extended with more functionality.

Smocker is a simple and efficient HTTP mock server and proxy

HTTP Request & Response Service, Mock HTTP

✔️ Mock data for your prototypes and demos. Remote deployments to Zeit now.

Powerful friendly HTTP mock server & proxy library

接口自动化测试平台——python+flask版，支持http协议,java 版本开发完毕https://github.com/liwanlei/plan

Lightweight, blazing fast, cross-platform OpenAPI 3 mock server with validation

Official master for the Greenmail project

REST API Testing Tool for all levels in a Test Pyramid

HTTP mocking library for Rust