MiniStack
Ministack: Free, open-source local AWS emulator
...It emulates over 35 AWS services through a single unified endpoint, allowing developers to test applications, infrastructure, and CI/CD pipelines without needing real cloud resources. One of its defining characteristics is its use of “real infrastructure” where possible, meaning services like databases and container orchestration are backed by actual technologies such as PostgreSQL, MySQL, Redis, and Docker instead of pure mocks. The system is designed to be drop-in compatible with existing AWS tooling, including boto3, Terraform, AWS CLI, and other SDKs, making migration seamless for existing projects. ...