VYOMI Local Cloud Simulator

The cloud was built to run software — not to build it.

So stop developing against it.

Vyomi is a faithful twin of AWS, GCP & Azure that runs on your laptop — or right in a browser tab. Same SDKs, CLIs and Terraform, real backends, zero cloud bill — so you build, test and validate cloud code without ever touching the cloud.

▶ Try in your browser Start free

console.vyomi.cloud/awsLive

console.vyomi.cloud/gcpLive

console.vyomi.cloud/azureLive

console.vyomi.cloud/workspacesLive

Coming from LocalStack? See the side-by-side comparison

PRINCIPLES

How it stays faithful.

We simulate API contracts + lifecycle with the cheapest convincing tech — never reproducing cloud internals. The principle is fidelity-at-the-edge.

Real backends

S3 / GCS / Blob run on MinIO + fake-gcs. RDS and Cloud SQL run on real Postgres + MySQL. Secrets go to Vault. Functions execute real Python and Node. Nothing is mocked at the edge — your SDK talks to the genuine thing.

S3 · GCS · Blob→MinIO · fake-gcs

RDS · Cloud SQL→Postgres · MySQL

Secrets Manager→Vault

Lambda · Functions→Python · Node exec

8 backends · all opt-in via compose profiles.

Cedar IAM

AWS IAM and Cedar policies enforced at the API surface. Deny-by-default, principal/resource scoping, condition keys.

Developer + Enterprise tiers.

Terraform hand-off

Export any space's state to HCL with one click. Single-cloud deploy on Developer; multi-cloud orchestration on Enterprise.

Round-trip tested with terraform plan + apply.

CloudSim power

Heterogeneous VM shapes feed CloudSim Plus for energy + cost simulation. Real LXD limits per instance type.

Per-space totals + per-resource on Developer+.

Native consoles

Real AWS / GCP / Azure web consoles re-implemented locally. EC2-style wizards, ARM-style multi-step.

11 + 9 + 9 services with full create-wizards.

Tenant isolation

Multi-tenant by default. Per-tenant quota + license, structural cross-tenant block, isolated buckets.

1:N tenant:space, 1:1 space:provider.

FEATURES

What's inside

3 cloud providers · 35 services · Cedar IAM · Terraform export · CloudSim power model · 8 real backends.

Explore features →

PRICING

Plans & pricing

Free forever for individuals. Paid plans from $9/mo · Enterprise from $12/developer.

See pricing →

DOCS

API Reference

Interactive Swagger consoles + SDK/CLI usage, one per cloud. Self-hosted, no appliance required.

Open docs →

Traction

Developers are already building on the twin.

Not a demo — a multi-cloud simulator that ships every week, gets pulled at scale, and runs on real machines and in the browser.

Deduped per install · internal/dev excluded · country from CF-IPCountry, no IP stored. How we count ↗

Verified by real conformance harness

Real SDKs · works unchanged

Your existing boto3 / aws-sdk-java / google-cloud-* / azure-sdk-* code runs against vyomi with one URL change — no mocks, no shims.

app.py unchanged

import boto3

# Point the SDK at your local Vyomi appliance.
# This is the ONLY line that changes.
s3 = boto3.client(
    "s3",
    endpoint_url="http://localhost:9200",   # ← the one change
    region_name="us-east-1",
)

s3.create_bucket(Bucket="invoices")
s3.put_object(Bucket="invoices", Key="q3.pdf", Body=data)
# ✓ runs against Vyomi exactly like real AWS

One URL change. No mocks, no shims, no code rewrite.

Works with what you already use

AWS 4 SDKs

boto3 aws-sdk-java aws-sdk-go aws CLI v2

GCP 4 SDKs

google-cloud-python google-cloud-java google-cloud-go gcloud + gsutil

Azure 4 SDKs

azure-sdk-python azure-sdk-java azure-sdk-go az CLI

Tooling 2 IaC

terraform OpenAPI specs JUnit harness Playwright tests

Ship cloud apps
without paying the cloud.

Free forever for individuals. Paid plans starting at $9/mo.

Start free Read the docs →