Integration Testing GitHub Repositories (2026) · Open Source Tools

Cucumber for golang

Hurl, run and test HTTP requests with plain text.

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.

A curated list of cloud emulators and local cloud development tools for AWS, Azure, and Google Cloud. Explore Moto, Azurite, LocalStack, Firebase, and more for integration testing and CI/CD.

Full-stack testing PHP framework

Write better integration tests! Dockertest helps you boot up ephermal docker images for your Go tests with minimal work.

Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.

Official master for the Greenmail project

Stove: The easiest way of writing e2e/component tests for your back-end app (jvm, go, rust, node, etc) with Kotlin

End to end functional test and automation framework

Mifos X Field Officer Application - Latest Release Branch "MAIN", Default Branch for all PRs "DEV". Releases from Dev to Main subject to release process.

Headless Chrome/Chromium driver for Capybara

ClauDB is a REDIS implementation in Java

Improving Spring Boot test efficiency

A local emulator of the Scaleway, Outscale and Exoscale APIs. Their own official CLIs drive it end to end, Terraform and OpenTofu drive two of the three — no cloud account, no cloud credentials, nothing billed.

.NET Assertions for HTTP APIs

Open-source OpenAPI mock server with cloud hosting and local modes for development, testing, and CI. Generates realistic API responses from specs with latency simulation, error injection, proxy fallback, and request validation. Validated against 2,200+ real-world OpenAPI specs.

Framework for automated integration tests with focus on message-based applications

Create a virtual X screen from Ruby, record videos and take screenshots.

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.