Industry standard API mocking for JavaScript.
mock api service-worker devtools mocking mocking-framework mocking-library api-mocking msw mock-service-worker mswjs
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Oct 13, 2025 - TypeScript
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api-mocking
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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
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Sep 10, 2025 - Go
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
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May 28, 2025 - Java
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
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Feb 3, 2025 - Java
Build web applications today against the GraphQL APIs of tomorrow.
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Sep 30, 2025 - TypeScript
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.
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Sep 10, 2025 - TypeScript
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
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Mar 2, 2025 - JavaScript
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
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Oct 16, 2025 - Go
Language-agnostic API mocking and testing utility
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Oct 1, 2025 - Go
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
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Oct 22, 2024 - Go
Unified data modeling
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Jun 17, 2019 - JavaScript
Mock Service Worker Tools (MSW-Tools) is a data Mock tool built based on MSW.JS and Svelte. It is used for data linkage between front and back end interfaces, facilitating developers to perform functional tests in different data and scenarios.
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Jun 19, 2023 - Svelte
A lightweight, specification-first Go API mock server that generates realistic responses from OpenAPI 3.0 specifications.
testing mock golang rapid-prototyping developer-tools hot-reload api-design openapi3 api-mocking specification-first dynamic-mocking openapi-mock
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Sep 28, 2025 - Go
Demo of how to mock API's in Playwright for e2e testing
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Jul 9, 2024 - TypeScript
Instantly generate mock REST APIs powered by LLMs (GPT/Gemini). Just describe your endpointβMockGen does the rest. Docker-ready, fast, and open source.
python vue swagger gemini openai developer-tools api-testing mock-api api-mocking fastapi llm ai-tool mock-api-tool
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Jul 23, 2025 - Python
A lightweight TypeScript library for mocking API endpoints during frontend development. Perfect for developing frontend applications before the backend is ready, or for testing different API scenarios.
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Oct 1, 2025 - TypeScript
π Multi-armed mocks for LLM apps - Drop-in replacement for OpenAI/Anthropic APIs for deterministic testing
python testing continuous-integration mock-server evaluation pytest openai developer-tools testing-tools deterministic api-mocking openai-api llm anthropic function-calling llm-testing
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Sep 24, 2025 - Python
Fully functional API was never an option.
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Jun 20, 2025 - Go
Comprehensive testing suite for Next.js applications, encompassing JavaScript unit tests followed by Next.js-specific unit and integration tests. Utilizes Jest for unit testing, integrating To-Do list functionality, and implements API mocking for robust testing of the To-Do list features.
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Dec 10, 2023 - TypeScript
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