Cloud Development
1 open source tools compared. Sorted by stars — scroll down for our analysis.
| Tool | Stars | Velocity | Language | License | Score |
|---|---|---|---|---|---|
 floci Light, fluffy, and always free - AWS Local Emulator | 2.0k | +1757/wk | Java | MIT License | 62 |
Our Analysis
If you develop on AWS and need to test locally without paying for cloud resources — S3, DynamoDB, SQS, Lambda, the works — Floci is a drop-in replacement for LocalStack that's actually free. This matters because LocalStack is sunsetting its free community tier in March 2026. Floci starts in ~24ms, uses ~13 MiB of memory, and the Docker image is ~90 MB vs LocalStack's ~1 GB. It runs on port 4566 — the same port LocalStack uses — so switching requires zero code changes. Built in Java with Quarkus, compiled to a native binary via GraalVM. MIT licensed, 2K stars, growing at +1,757/wk. Already supports CloudFormation, Step Functions, DynamoDB Streams, Kinesis, Cognito, KMS, Secrets Manager, EventBridge, CloudWatch, API Gateway v2, and more. The catch: it's new and playing catch-up on AWS service coverage. LocalStack has years of edge cases handled. If you use an obscure AWS service, Floci might not emulate it yet. And 'no auth token required' means no telemetry, but also no commercial support if things break.