floci-io/floci

Published on Oct 15, 2026

★ 28.4k Rust Apache-2.0

Why developers replace heavy LocalStack containers with Floci

Stop burning 4GB of RAM just to test AWS services locally.

Heavy Docker cloud emulators bottleneck local development and CI test suites.

Testing cloud architectures offline usually forces developers to run bloated virtual machines that drain laptop batteries and slow down integration tests.

github.com/floci-io/floci · Zero-Docker AWS cloud emulator

Floci boots an entire local AWS environment in under twenty milliseconds.

Written in Rust, Floci launches as a single native binary, listening on port 4566 and ready to handle incoming AWS requests almost instantaneously.

Startup latency benchmark: Cold boot to API readiness

Full API parity for S3, SQS, DynamoDB, and serverless messaging.

It supports core cloud primitives with high fidelity: object storage, message queues, pub-sub topics, and NoSQL tables all run entirely in-memory.

Core supported AWS services running in-memory locally

Standard AWS SDKs and CLI connect with zero code modifications.

You don't need proprietary libraries. Simply configure your AWS SDK or CLI endpoint URL to localhost, and every cloud operation executes offline.

Point standard AWS tools directly to localhost:4566

Open-source under Apache-2.0. Perfect for lightning-fast test suites.

By eliminating Docker overhead from your local test loop, Floci turns sluggish integration tests into instantaneous unit-speed verifications.

floci-io/floci · Apache-2.0 license