Repository Index

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

• api
• fake
• frontend
• json

Light, fluffy, and always free - The AWS Local Emulator alternative

• aws
• aws-emulation
• localstack
• devops

An email and SMTP testing tool with API for developers

• email-testing
• go
• golang
• smtp-server

A library that allows you to easily mock out tests based on AWS infrastructure.

• boto
• aws
• ec2
• s3

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

• mock
• server
• rest-api
• rest

Highly opinionated mocking framework for PHP 5.3+

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

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

• api
• testing
• kubernetes
• api-testing

Get a full fake GraphQL API with zero coding in less than 30 seconds.

• graphql
• graphql-server
• express-graphql

Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (258,545/258,545 variants pass). No account, no auth token, no paid tier.

• aws
• aws-emulator
• aws-testing
• dynamodb

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

Bouncy Hsm is a software simulator of HSM and smartcard simulator with HTML UI, REST API and PKCS#11 interface.

• blazor
• blazor-webassembly
• bouncycastle
• cryptography

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

• vcr
• http
• playback
• mock

A simple Elixir package to elegantly mock module functions within (asynchronous) ExUnit tests using Erlang's :meck library

• elixir
• mocking
• exunit
• meck