GitHub Repository

Local AWS emulator focused on fast integration testing, with SQS support, SQLite-backed state, and a debug-friendly web UI.

73 starsRust

Hiraeth – AWS Emulator

Name: Hiraeth – AWS Emulator
Availability: InStock
Author: ozarkerD

by ozarkerD·Apr 16, 2026·40 points·13 comments

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AI Analysis

●●SolidCozyNiche Gem

4MB image beats Localstack's bloat, but only SQS works so far.

Strengths

•4MB Docker image with instant startup versus Localstack's hundreds of MBs.
•SQLite backend simplifies state management without external dependencies.
•SQLx offline query metadata ensures checked SQL builds at compile time.

Weaknesses

•Only SQS implemented—needs S3, DynamoDB, Lambda to compete with Localstack.
•Zero GitHub stars and 45 commits suggests very early stage with unknown stability.

Post Description

With the recent changes around Localstack pricing/licensing I've been hunting for alternatives. I decided that it might be a fun experiment to try rolling my own. SQS is a service I use heavily so I chose that as the first service to implement. I have more services planned and in development.

A few things I think are cool:

4MB Docker Image Size

Instant Startup

AWS Sigv4 Authentication

A little admin UI that can be helpful for development/troubleshooting

Most of the SQS API implemented, the rest will soon follow :)