Any cloud.Locally.
Any cloud.
Locally.Run AWS, Azure, GCP, and OCI locally in milliseconds: the fast, credential-free loop your team and its AI agents need to ship faster.
Get started ↓ For AI agents ↓ ★ GitHub
Cloud Emulators
Pick your cloud. Start instantly.
Each emulator is a standalone MIT-licensed binary. No auth tokens, no feature gates, no cloud account needed.
AWS
floci
Drop-in replacement for LocalStack. Same port 4566, 119 services, native binary. Switch with zero code changes.
4566
port
119
services
24 ms
startup
S3SQSLambdaDynamoDBRDSEKS+113 more
Azure
floci-az
Covers Blob, Queue, Table, Functions, App Config, Key Vault, Event Hubs and Service Bus. Native speed, MIT license, no Azure account needed.
4577
port
28
services
13 MiB
idle memory
BlobQueueTableFunctionsKey VaultEvent HubsService Bus+21 more
GCP
floci-gcp
Covers GCS, Pub/Sub, Firestore, Cloud Run, Cloud SQL, GKE and more. All 25 services on one port, native binary. MIT license, no GCP account needed.
4588
port
25
services
MIT
license
GCSPub/SubFirestoreDatastoreSecret ManagerIAM+19 more
OCI
floci-oci
Covers Object Storage, Identity, Queue, Streaming, KMS, Vault and Functions. All 8 services on one port. MIT license, no Oracle Cloud account needed.
4599
port
8
services
MIT
license
Object StorageQueueStreamingKMSVaultFunctions+2 more
Built for AI-assisted development
Give your AI agents a cloud they can't break.
Coding agents write cloud code faster than ever, but they can't safely run it against a real account. Point them at Floci instead: a local cloud to build, run, and verify against. Instant, free, and credential-free.
0
No credentials to leak.
Agents connect with throwaway keys. No real cloud secrets in the agent's context or sandbox. Nothing to exfiltrate, nothing to bill.
24ms
Inner-loop fast.
24 ms cold start, 13 MiB idle. Agents spin up, test, and tear down inside the edit loop instead of waiting on round-trips to a remote account.
real
Real signal, not mock theater.
Lambda, RDS, Redis, and Kafka run for real, so code an agent verifies locally behaves the same in production. No mock-shaped false positives.
✗
Zero blast radius.
Let agents iterate aggressively. Worst case, they reset a local container, not your staging environment or your cloud bill.
\# Point any agent's tooling at Floci. No keys, no cloud account export AWS\_ENDPOINT\_URL=http://localhost:4566 pytest tests/ \# runs against real-shaped S3, DynamoDB, Lambda…
Works with every SDK, CLI, Terraform/OpenTofu module, and test runner your agents already use, with no special integration.
Developer Tools
One toolchain. All clouds.
Manage and explore every Floci emulator from a unified CLI or visual dashboard.
CLI
floci-cli
A unified command-line interface to start, stop, and inspect all Floci emulators. One install covers AWS, Azure, GCP, and OCI from a single tool.
\# Install (macOS / Linux) curl -fsSL https://floci.io/install.sh | sh \# Start the AWS emulator floci start \# Check your environment floci doctor
UI
floci-ui
A visual dashboard for all Floci cloud emulators. Browse resources, inspect data, and manage services across AWS, Azure, GCP, and OCI from one place.
BROWSE ALL SERVICES
S3 Browser DynamoDB SQS Queues Lambda Logs Blob Storage Azure Queue \+ more
Why Floci
Built for developers who ship.
No gatekeeping. No pricing tiers. No surprises. A local cloud that starts in milliseconds and works everywhere.
$0
MIT Licensed. Forever free.
Fork it, embed it, extend it. No "community edition" sunset, no enterprise feature flags. Every service is available to every developer, always.
✗
No auth token. Ever.
Pull the Docker image and go. No sign-ups, no API keys, no telemetry. LocalStack started requiring an auth token in March 2026. Floci never will.
24ms
Native binary speed.
Compiled with GraalVM Mandrel. Starts in 24ms, idles at 13 MiB, fast enough for inner-loop iteration. Your CI, your laptop, and your AI agents will all thank you.
real
Real engines, not mocks.
Lambda runs in real Docker containers. RDS uses real PostgreSQL/MySQL. ElastiCache runs real Redis. 100% protocol fidelity, no surprises in production.
Use Cases
Where teams put Floci to work.
From the inner loop to CI to the classroom — anywhere a real cloud account is too slow, too risky, or too expensive.
CI
Ephemeral test environments.
Spin up the full stack inside every pipeline job. 24 ms startup adds nothing to the build, each job gets an isolated cloud, and teardown is free.
λ
Local-first development.
Build against S3, Pub/Sub, or Service Bus on your laptop — offline if you want. No shared dev account to trip over, no credentials to rotate.
tf
Infrastructure-as-code dry runs.
Apply Terraform, OpenTofu, or CloudFormation against localhost first. Catch typos, drift, and bad refactors before they ever touch a real account.
101
Workshops & onboarding.
Teach cloud services with zero billing risk. Every student runs the whole stack on their own machine — no accounts to provision, nothing to clean up.
Quick Start
One install. Every service, locally.
No account, no token. Pick your platform and go.
macOS / Linux Windows Docker · AWS Docker · Azure Docker · GCP Docker · OCI
\# Install floci-cli curl -fsSL https://floci.io/install.sh | sh \# Start the AWS emulator & export env vars floci start && eval $(floci env) \# Create a bucket aws s3 mb s3://my-bucket \# Upload a file echo "Why pay for S3 when floci is free? 🎉" \> hello-floci.txt aws s3 cp hello-floci.txt s3://my-bucket/ \# Download it back aws s3 cp s3://my-bucket/hello-floci.txt hello-back.txt cat hello-back.txt
\# Install floci-cli (PowerShell) irm https://floci.io/install.ps1 | iex \# Start the AWS emulator & export env vars floci start; floci env | Invoke-Expression \# Create a bucket aws s3 mb s3://my-bucket \# Upload a file "Why pay for S3 when floci is free? 🎉" | Out-File hello-floci.txt aws s3 cp hello-floci.txt s3://my-bucket/ \# Download it back aws s3 cp s3://my-bucket/hello-floci.txt hello-back.txt; Get-Content hello-back.txt
\# Run all 119 AWS services on port 4566 docker run --rm -p 4566:4566 \\ \-v /var/run/docker.sock:/var/run/docker.sock \\ floci/floci:latest \# Point the AWS CLI at floci export AWS\_ENDPOINT\_URL\=http://localhost:4566 export AWS\_ACCESS\_KEY\_ID\=test AWS\_SECRET\_ACCESS\_KEY\=test \# Create a bucket aws s3 mb s3://my-bucket \# Upload a file echo "Why pay for S3 when floci is free? 🎉" \> hello-floci.txt aws s3 cp hello-floci.txt s3://my-bucket/ \# Download it back aws s3 cp s3://my-bucket/hello-floci.txt hello-back.txt cat hello-back.txt
\# Run Blob, Queue, Table & Functions on port 4577 docker run --rm -p 4577:4577 \\ floci/floci-az:latest \# Configure the Azure CLI export AZURE\_STORAGE\_CONNECTION\_STRING\="DefaultEndpointsProtocol=http;\\ AccountName=devstoreaccount1;AccountKey=Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==;\\ BlobEndpoint=http://localhost:4577/devstoreaccount1;" \# Create a container & upload a file az storage container create -n my-container echo "Azure locally, no bill, no drama. 🚀" \> hello-floci.txt az storage blob upload -c my-container -f hello-floci.txt -n hello-floci.txt \# Download it back az storage blob download -c my-container -n hello-floci.txt -f hello-back.txt cat hello-back.txt
\# Run Cloud Storage on port 4588 docker run --rm -p 4588:4588 \\ floci/floci-gcp:latest \# Point the gcloud CLI at floci-gcp export CLOUDSDK\_API\_ENDPOINT\_OVERRIDES\_STORAGE\=http://localhost:4588/ export CLOUDSDK\_CORE\_PROJECT\=floci-local \# Create a bucket & upload a file gcloud storage buckets create gs://my-bucket echo "No billing alert? Must be floci. ☁️" \> hello-floci.txt gcloud storage cp hello-floci.txt gs://my-bucket/ \# Download it back gcloud storage cp gs://my-bucket/hello-floci.txt hello-back.txt cat hello-back.txt
\# Run all 8 OCI services on port 4599 docker run --rm -p 4599:4599 \\ \-v /var/run/docker.sock:/var/run/docker.sock \\ floci/floci-oci:latest \# One-time OCI CLI setup (throwaway API key + profile) & env vars floci oci setup && eval $(floci oci env) export TENANCY\_OCID\=ocid1.tenancy.oc1..flocilocaltenancy0000000000000000000000000000000000000000 \# Create a bucket & upload a file oci os bucket create \\ \--namespace-name floci-local --name my-bucket --compartment-id $TENANCY\_OCID echo "Oracle Cloud locally — no bill, no drama. 🚀" \> hello-floci.txt oci os object put \\ \--namespace-name floci-local --bucket-name my-bucket --file hello-floci.txt \# Download it back oci os object get \\ \--namespace-name floci-local --bucket-name my-bucket --name hello-floci.txt --file hello-back.txt cat hello-back.txt
119 AWS services ready on :4566. S3 · SQS · DynamoDB · Lambda · RDS · +114 more
♥ Open Source Sustainability
We're looking for sponsors
Floci is free, MIT licensed, and built in the open. Sponsorships help us keep it that way, funding infrastructure, development time, and new cloud emulators.
🥇 Gold
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🥈 Silver
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Your company
🥉 Community
＋ your name
🥉 Community
$25 / mo
＋
Your name here
Name in the emulator READMEs
Sponsor badge on GitHub
Our sincere thanks
🥈 Silver
$150 / mo
＋
Your logo here
Logo in the emulator READMEs and on floci.io
Mention in release notes
★ Most wanted
🥇 Gold
$500+ / mo
＋
Your logo here
Large logo, top placement
Logo in the emulator READMEs and on floci.io
Mention in release notes