Lightweight service virtualization/ API simulation / API mocking tool for developers and testers

Over the wire test doubles

Eliminate API integration headaches with Specmatic's no-code AI-powered API development suite. Teams ship APIs 10x faster by transforming specifications into executable contracts instantly—no coding required, no integration surprises.

Camouflage is a backend mocking tool for HTTP, gRPC, Websockets and Thrift protocols, which helps you carry out your front end prototyping, unit testing, functional/performance testing in silos, in absence of one or more Microservices/APIs.

HTTP mock for Golang: record and replay HTTP/HTTPS interactions for offline testing

Java binding for Hoverfly

Service Virtualization Solution – a combined Service Stub and Transparent Proxy

Mock HTTP/SSE and LLM APIs (service virtualization). Inspired by Wiremock, it supports streaming / SSE

A .Net Library for Hoverfly

Stubbing tool for HTTP calls to allow more comprehensive + deterministic tests

Bokor is a simple, Record and Playback Mock Server written in Node.js, utilized for Service Virtualization.

A fluent Java API for virtualizing HTTP services. Service virtualization simplified. No endpoint configuration. Import/export of request-response pairs.

Service Virtualized HTTP - to help service test automation stay fast and consistent

Stub and validate HTTP endpoints with ease.

Admin dashboard for Hoverfly

A mountebank client written in Go.

Servirtium Overview

Hoverfly integration for pytest

Service Virtualized HTTP - to help service test automation stay fast and consistent - for Go projects

Service Virtualized HTTP - to help service test automation stay fast and consistent - for Rust projects