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api-mocking

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Here are 231 public repositories matching this topic...

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msw

mswjs / msw

Sponsor
Star 18.3k

The industry standard for API mocking in JavaScript.

mock api service-worker devtools mocking mocking-framework mocking-library api-mocking msw mock-service-worker mswjs
  • Updated Nov 11, 2026
  • TypeScript

SpectoLabs / hoverfly

Star 2.5k

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

testing go golang http https rest-api proxy mitm mocking stubbing testing-tools api-simulation service-virtualization hoverfly api-mock api-mocking
  • Updated Nov 11, 2026
  • Go

dotnet / dev-proxy

Star 843

Simulate API failures, throttling, and chaos — all from your command line.

http rest proxy mcp mock-server rate-limiting openapi openai developer-tools api-testing fault-injection resilience microsoft-graph chaos-engineering api-mocking dev-proxy microsoft-365 llm
  • Updated Nov 12, 2026
  • C#

azagniotov / stubby4j

Sponsor
Star 366

HTTP/1.1, HTTP/2 and WebSockets stub server for stubbing distributed web services in Docker and non-containerized environments for integration and contract testing

websocket-server http2 integration-testing mock-server arm64 docker-images microservices-testing api-testing stub-server contract-testing websocket-tester consumer-driven-contracts http-stub record-and-replay rest-api-test http2-server api-mocking contract-tests stubbing-framework service-stubbing
  • Updated May 28, 2025
  • Java

dhuan / mock

Star 173

Build and test APIs easily

testing mock api golang server mock-server e2e-tests command-line-tool api-mocking
  • Updated May 8, 2026
  • Go

getmockd / mockd

Star 155

High-performance, multi-protocol mock server. HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, SOAP in one binary.

testing graphql cli golang mqtt mcp websocket soap mock-server grpc sse developer-tools service-virtualization chaos-engineering api-mocking
  • Updated Sep 17, 2026
  • Go

matthewgallina / smockin

Star 97

Dynamic API, S3 & Mail mocking for web, mobile & microservice development.

java api simulation mock-server raml s3 s3-bucket mocking api-rest java-8 api-simulation api-mock mock-api api-mocking
  • Updated Jun 30, 2026
  • Java
pikopod

Pikopod / pikopod

Star 82

A sandbox for the third-party APIs you depend on. Built from the provider's spec, it fails on purpose, and it replays the exact failure production hit.

go api cli golang mcp sandbox mock-server openapi payments developer-tools api-testing contract-testing chaos-engineering api-integration api-mocking drift-detection mcp-server
  • Updated Nov 7, 2026
  • Go
wiretapKMP

skymansandy / wiretapKMP

Star 75

Kotlin Multiplatform library for network inspection and mocking. Intercept HTTP and WebSocket traffic, mock API responses, and throttle requests.

android kotlin mock swift ios websocket okhttp interceptor network-monitoring urlsession mocking-library debugging-tool ktor kmp kotlin-multiplatform api-mocking network-inspector compose-multiplatform http-inspector websocket-inspector
  • Updated Oct 21, 2026
  • Kotlin

asmyshlyaev177 / test-proxy-recorder

Star 74

Record & replay API responses for Playwright E2E tests — SSR proxy + browser HAR + WebSockets. Deterministic CI, no backend, no manual mocks.

testing ssr nextjs testing-tools mocking-framework vcr api-mock e2e-testing api-mocking playwright record-replay
  • Updated Nov 8, 2026
  • TypeScript

graphql-mocks / graphql-mocks

Star 68

Build web applications today against the GraphQL APIs of tomorrow.

nodejs graphql node browser mocking-framework mocking-library api-mocking graphql-mocks
  • Updated Feb 28, 2026
  • TypeScript
mokapi

marle3003 / mokapi

Sponsor
Star 60

Your API mocking tool for OpenAPI and AsyncAPI using Go and JavaScript - https://mokapi.io

javascript testing mock ldap kafka rest-api mock-server swagger openapi fake smtp api-simulation api-testing swagger2 openapi3 openapi2 api-mocking openapi-tooling mock-testing openapi31
  • Updated Nov 12, 2026
  • Go
oMockman

ozontech / oMockman

Star 54

DevTools extension for mocking fetch/XHR responses/requests in Chrome and Firefox

chrome-extension testing mock qa firefox-addon devtools openapi api-mocking
  • Updated Oct 29, 2026
  • TypeScript
apate

rustrum / apate

Star 51

API prototyping/mocking server & rust unit tests library to mimic external 3rd party API endpoints with Rhai scripting capabilities

rust integration-testing mock-server mocking prototyping api-rest httpmock api-mocking api-prototype
  • Updated Nov 4, 2026
  • Rust

Rowadz / pollux

Star 42

A tool that enables you to - Generate fake data in formats like JSON, Python, JS, Ruby, PHP and SQL - Mock restful APIs with Bearer authentication without writing a single line of code with a drag and drop interface.

react data-mocking api-mocking fake-data-generator graphql-mock
  • Updated Nov 27, 2025
  • TypeScript

D-Pow / mock-requests

Star 39

The first fetch/XMLHttpRequest network-mocking library that's actually user-friendly

javascript mock api mocking javascript-library api-wrapper developer-tools mock-library mock-services mocking-library mock-responses mock-api mock-apis api-mocking dynamic-mock dynamic-responses
  • Updated Mar 2, 2025
  • JavaScript
webhook-debugger-logger

ar27111994 / webhook-debugger-logger

Star 27

Enterprise-grade webhook testing suite for developers. Capture, inspect, replay, forward, validate, and mock webhook traffic in real time without tunnels. Includes SSE live streaming, JSON Schema validation, and signature verification for Stripe, GitHub, Shopify, Slack, and custom HMAC workflows.

nodejs docker debugging webhooks express real-time stripe sse self-hosted shopify developer-tools api-testing http-replay api-mocking webhook-testing
  • Updated Oct 31, 2026
  • JavaScript
keyrunner

launchiamenterprise / keyrunner

Star 23

Governed API and agent runtime for desktop, VS Code, and CLI. Secure API testing, mocking, automation, secret protection, and controlled AI tool access.

desktop-app cli api-testing ai-agents flows secrets-management api-automation api-mocking vscode-extensions api-monitoring developer-tool api-clients ai-agent-tools agent-runtime agent-registry developer-tools-ai-agent zero-trust-ai
  • Updated Aug 28, 2026

trco / wannabe

Star 18

A versatile Go tool for effortlessly generating mock HTTP APIs for all your needs.

testing http proxy mock-server mitm mocking testing-tools api-simulation api-mock mock-data mocking-server mock-apis fake-api mock-http api-mocking
  • Updated Feb 9, 2026
  • Go

cr0cK / bouchon

Star 17

Efficient API mocking with cool libraries: stateful mock APIs built on Redux-style actions, reducers, and selectors.

redux nodejs testing mock-server archived api-mocking
  • Updated Apr 28, 2019
  • JavaScript

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