ministackorg/ministack

Health v2 · maintenance only

Flags: young

Adoption not part of the score

4140 stars · 401 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

MiniStack is a free, MIT-licensed local AWS emulator that mimics 60+ AWS services (S3, SQS, SNS, DynamoDB, Lambda, EC2, RDS, ElastiCache, ECS, Athena, Bedrock, and more) on a single port (4566). It is a drop-in replacement for LocalStack Community that works with any AWS SDK, CLI, or IaC tool (boto3, AWS CLI, Terraform, CDK, Pulumi) without configuration changes, and can spin up real infrastructure such as actual Postgres/MySQL containers, real Redis/Valkey, and real Docker containers for ECS.

Use cases

• run AWS services locally for free without a paid LocalStack license
• test S3, DynamoDB, SQS, and Lambda code offline without touching real AWS or incurring costs
• integrate AWS emulation into CI/CD pipelines with a lightweight, fast-starting container
• spin up real Postgres and Redis containers via RDS and ElastiCache APIs for integration testing
• use Terraform, CDK, or Pulumi against a local fake AWS cloud
• simulate multi-account and multi-region AWS environments on a single endpoint
• test Amazon Bedrock LLM calls locally by proxying to Ollama, llama.cpp, or vLLM
• learn AWS concepts safely on a laptop with a disposable fake cloud

When to choose

• you need a free, MIT-licensed alternative after LocalStack moved core services behind a paywall
• you want a tiny footprint (~280MB image, ~30MB RAM idle) and sub-2-second startup for local dev or CI
• you need drop-in compatibility with existing AWS SDKs, CLIs, and Terraform without config changes
• you want real backing infrastructure (actual Postgres, Redis, Docker containers) rather than pure mocks
• you need multi-account and multi-region isolation on a single local endpoint

When to avoid

• you need production-grade fidelity to real AWS behavior for critical pre-production validation
• you depend on a specific AWS service or edge-case API behavior not among the 60+ emulated services
• you require LocalStack Pro features or vendor support contracts
• you need persistent, durable storage that survives restarts without extra configuration (state persistence is opt-in via environment variables)

Facets

service · maturity active

testing mock-api http-server developer-tools self-hosted container-runtime llm-inference database caching message-queue object-storage infrastructure-as-code deployment cloud cloud-computing testing developer-tools self-hosted infrastructure-as-code databases apis python cli self-hosted cross-platform aws-emulator localstack-alternative mock-aws local-development terraform-compatible boto3 aws-cli cloudformation testcontainers multi-account multi-region single-port ephemeral-state ci-cd-testing bedrock-proxy duckdb real-databases mit-licensed asgi sigv4 devops containers automation docker web-server

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markdown · JSON · MCP: product_card(name="ministackorg/ministack")