Ranked by Attention Score: stars gained over the last 30 complete days
19 repositories by Attention Score · Oct 6, 2026 – Nov 4, 2026 (UTC)
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.
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.
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
GoMock is a mocking framework for the Go programming language.
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
Record, Replay, and Stub HTTP Interactions.
TranslatedYApi is a visual API management platform that can be deployed locally and connects front-end, back-end, and QA
Papercut SMTP -- The Simple Desktop Email Server
JVM version of Pact. Enables consumer driven contract testing, providing a mock service and DSL for the consumer project, and interaction playback and verification for the service provider project.
Generate custom HTTP responses, the simpler way to test your Web Services
A .NET library for intercepting server-side HTTP requests
A Open Source Mocking framework for Delphi XE2 or later