The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP APIs, GraphQL, WebSocket, and more. Use any Node.js module.
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Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
A boilerplate for building production-ready RESTful APIs using Node.js, Express, and Mongoose
A tool for mocking HTTP services
- wiremock
- json
- mocking
- stubbing
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.
- mock-server
- proxy
- java-client
- javascript-client
RESTler is the first stateful REST API fuzzing tool for automatically testing cloud services through their REST APIs and finding security and reliability bugs in these services.
🎲 Mock or extend your GraphQL API with faked data. No coding required.
SoapUI is a free and open source cross-platform functional testing solution for APIs and web services.
- open-source
- on-prem
- soapui-oss
A smooth testing lib for F#. APIs made for humans! Strong testing methodologies for everyone!
- testing
- property-based-testing
- stress-testing
- unit-testing
Betamax is a tool for mocking external HTTP resources such as web services and REST APIs in your tests. The project was inspired by the VCR library for Ruby.
Scala testing library with actionable errors and extensible APIs
Extremely flexible golang deep comparison, extends the go testing package, tests HTTP APIs and provides tests suite
- golang
- golang-package
- go
- assertions
Shift-left API Integration | Auto-fix integration drift before integration. Specmatic turns API specifications into executable contracts, continuously verifying that every change made by AI coding agents and engineers stays true to the desired behaviour. Ship AI-ready APIs 10x faster, from intent to implementation, with Spec-Driven API Development.
- contract-testing
- microservices
- contract-driven-development
- cdd
🐵 HTTP mock server, useful to stub services and simulate dynamic API responses, leveraging ASP.NET Core features, built-in fake data generation and pure C# scripting
- csharp
- mock-server
- roslyn
- faker
FakeServer integrates with ExUnit to make external APIs testing simpler
- elixir
- test
- fake-server
- exunit
A framework for automated black-box testing of RESTful APIs.
The Swagger Coverage Tool is designed to measure API test coverage based on Swagger documentation. It provides automated tracking and reporting of test coverage for APIs, helping ensure that your endpoints and services are well-tested.
- coverage
- coverage-report
- coverage-testing
- httpx
localaik is a local compatibility server for a subset of the Gemini and OpenAI APIs. Run one container locally, point your SDK to it, and the proxy serves both protocol shapes on the same port for tests and development.
The simplest way to test your APIs and webhooks
- dockerfile
- qa-automation
- testing-tools
- self-hosted
A simple and efficient load testing tool for Web APIs built with Go.