Floci runs AWS, Azure, GCP and OCI cloud services locally

The open-source project Floci offers a set of local cloud emulators that run AWS, Microsoft Azure, Google Cloud and Oracle Cloud Infrastructure services on a developer's own machine. According to the project's site, each emulator is a standalone binary released under the MIT licence, and none of them needs a cloud account, an authorization token or a paid plan.

Four emulators, four ports

The AWS emulator, floci, is presented as a drop-in replacement for LocalStack: the same port 4566, 119 services and a native binary, so existing code does not have to change. The site lists S3, SQS, Lambda, DynamoDB, RDS and EKS among the supported services, puts cold start at 24 milliseconds and idle memory use at 13 MiB. The Azure emulator, floci-az, covers 28 services on port 4577, including Blob, Queue, Table, Functions, Key Vault, Event Hubs and Service Bus. floci-gcp brings 25 Google Cloud services to port 4588, among them Cloud Storage, Pub/Sub, Firestore, Cloud Run, Cloud SQL and GKE, while floci-oci places the eight Oracle Cloud services, from Object Storage and Identity to Queue, Streaming, KMS, Vault and Functions, on port 4599.

A cloud for AI agents

A separate section of the site addresses coding agents: they write cloud code faster than they can safely run it against a real account, so the project suggests pointing them at a local cloud instead. Agents connect with throwaway keys, which keeps real cloud secrets out of their context and test environment. The worst outcome of a failed run is a reset local container, while staging and the cloud bill stay untouched. Floci says the services run on real engines rather than imitation: Lambda runs in real Docker containers, RDS uses real PostgreSQL or MySQL, and ElastiCache runs real Redis, so code verified locally should behave the same way in production.

One toolchain, MIT licence

Two companion tools tie the emulators together: the floci-cli command-line interface, installed with a single shell script and used for commands such as floci start and floci doctor, and floci-ui, a visual dashboard for browsing S3, DynamoDB, SQS and Lambda resources. According to the project, the toolchain works with every SDK, CLI, Terraform or OpenTofu module and test runner without special integration.

Floci is MIT licensed and free. The site states that it will never require an auth token, and recalls that LocalStack introduced such a token in March 2026. The project's GitHub page shows 25.6k stars, and it is looking for sponsors, with tiers from $500 a month (Gold) and $150 (Silver) down to $25 (Community); IceGuard, Softmax, AutoScout24 and Nexxion.ai are named as backers.