sivchari/kumo

Health v2 · maintenance only

Adoption not part of the score

1448 stars · 90 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Kumo is a lightweight AWS service emulator written in Go that mimics 82 AWS services such as S3, DynamoDB, SQS, and Lambda. It runs as a single binary or Docker container, requires no authentication, and supports optional data persistence for local development and CI/CD testing.

Use cases

• emulate AWS services locally without an AWS account
• run integration tests against fake AWS services in CI pipelines
• test Go code using AWS SDK v2 without hitting real AWS
• spin up a local S3 or DynamoDB server for development
• replace Localstack with a lighter single-binary alternative
• persist emulated AWS data across restarts during development

When to choose

• you need fast, lightweight AWS emulation in CI with no auth setup
• you want a single binary or Docker container instead of Localstack's heavier stack
• your tests use AWS SDK v2 from Go
• you need broad service coverage (82 services) in an emulator

When to avoid

• you need exact AWS API fidelity or advanced service behaviors
• you rely on AWS services not among the 82 supported ones
• you need multi-account, IAM enforcement, or realistic security semantics

Facets

cli-tool · maturity active

testing mock-api http-server developer-tools cloud-computing testing developer-tools go cli cross-platform aws-emulator localstack-alternative ci-testing single-binary aws-sdk devops docker

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markdown · JSON · MCP: product_card(name="sivchari/kumo")