Light, fluffy, and always free - The AWS Local Emulator alternative
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Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
A library that allows you to easily mock out tests based on AWS infrastructure.
TranslatedRAP, the second generation of the open-source API management tool from the Alimama (阿里妈妈) front-end team
Catches mail and serves it through a dream.
- smtp
- server
- ruby
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
- oas
- prism
- mocking
- api-testing
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
Automatically mock your HTTP interactions to simplify and speed up testing
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
EasyMock, makes mocking easier since 2001
Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (257,522/257,522 variants pass). No account, no auth token, no paid tier.
Mocking library for Elixir language
All-in-one go testing library
- go
- golang
- instrumentation
- mock
A Open Source Mocking framework for Delphi XE2 or later
- delphi
- mocking-framework
- dpmpackage
Mock object for Go http.ResponseWriter
Symfony bundle which is used to create fake API Sandbox response with annotations
- php
- php7
- symfony
- symfony2