LocalStack

Name: LocalStack
Price: 35 USD
Author: LocalStack

A local AWS cloud emulator so you can test infrastructure without an AWS bill.

Test Data & MocksFree tierOpen sourceSelf-hostable

What it is

LocalStack emulates AWS services — S3, Lambda, DynamoDB, SQS, SNS, API Gateway and many more — on your machine or in CI, so integration tests against cloud infrastructure run offline, fast and free. The Pro edition covers additional services and advanced features such as state persistence and cloud pods.

Best for

AWS-native teams whose tests currently depend on a shared cloud account.

Where it is strong

Integration tests against AWS services run offline in seconds at no cloud cost.
Removes the shared-sandbox-account contention that plagues cloud teams.
Works with Terraform and CDK, so infrastructure code is testable.

Where it falls short

Emulation is not identical to AWS; some behaviours and IAM semantics differ.
Many services are Pro-only.
Keeping up with AWS feature changes means occasional gaps.

Pricing

From $35 per user/month (indicative, Pro)

Free tier

Free tier: Community edition covers the most-used AWS services and is free.

What drives the bill: Community edition is genuinely useful; Pro adds services such as RDS, ECS and advanced IAM enforcement.

Check current pricing on LocalStack’s site

Figures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.

Works with

AWS CLITerraformDockerGitHub ActionsServerless FrameworkCDK

What people who use LocalStack say

No reviews of LocalStack yet. If you have used it in anger, yours would be the first.

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