I maintain LocalEmu, a free and open-source (Apache 2.0) AWS emulator. It started as a fork of the archived LocalStack Community edition. The goal is to keep a genuinely free, open local AWS emulator alive and maintained.
What it does:
- Emulates 132 AWS services on a single endpoint (
localhost:4566) - Pure-Python core, with real Docker engines for Lambda, EC2, RDS, ECS, EKS, and OpenSearch
- Point your existing AWS CLI, boto3, Terraform, CDK, or Pulumi at it, zero config
- No account, no auth token, no telemetry. Persistent state across restarts
- Optional fidelity knobs: IAM policy enforcement, throttling, latency injection, Lambda cold starts
Why I built it: kill the multi-minute deploy loop, drop the dev/test AWS bill to zero, and stop keeping real credentials on dev machines.
It’s for fast local dev, testing, and learning, not production, and not bit-for-bit parity with the real cloud.
Repo: https://github.com/localemu/localemu Site: https://localemu.cloud/
Happy to answer questions, and feedback is very welcome.
is this vibe-coded
Definitely
If the project itself is vibe coded, the author is doing a good job of hiding it. There’s some slight lean towards claude-like speak, (“real behavior” and the way some of the readme sounds) but the commit style and comments and such don’t immediately trigger the obvious LLM alarms in my head.
That website is definitely vibe coded though. I’ve seen enough one-shot websites from LLMs while playing around with them to immediately notice the AI website style lol